92 (number)
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92 (ninety-two) is the natural number following 91 and preceding 93.


In mathematics


Form

92 is a
composite number A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Accordingly it is a positive integer that has at least one divisor other than 1 and itself. Every positive integer is composite, prime numb ...
of the general form ''p''2''q'', where ''q'' is a higher
prime A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime because the only ways ...
( 23). It is the tenth of this form and the eighth of the form 22''q''.


Properties

There are 92 "atomic elements" in John Conway's
look-and-say sequence In mathematics, the look-and-say sequence is the integer sequence, sequence of integers beginning as follows: : 1, 11, 21, 1211, 111221, 312211, 13112221, 1113213211, 31131211131221, ... . To generate a member of the sequence from the previous ...
, corresponding to the 92 non-transuranic elements in the chemist's
periodic table The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows (" periods") and columns (" groups"). It is an icon of chemistry and is widely used in physics and other s ...
.


Solids

The most faces or vertices an Archimedean or
Catalan solid The Catalan solids are the dual polyhedron, dual polyhedra of Archimedean solids. The Archimedean solids are thirteen highly-symmetric polyhedra with regular faces and symmetric vertices. The faces of the Catalan solids correspond by duality to ...
can have is 92: the
snub dodecahedron In geometry, the snub dodecahedron, or snub icosidodecahedron, is an Archimedean solid, one of thirteen convex Isogonal figure, isogonal nonprismatic solids constructed by two or more types of regular polygon Face (geometry), faces. The snub dod ...
has 92 faces while its dual polyhedron, the pentagonal hexecontahedron, has 92 vertices. On the other hand, as a simple polyhedron, the
final stellation of the icosahedron In geometry, the complete or final stellation of the icosahedron is the outermost stellation of the icosahedron, and is "complete" and "final" because it includes all of the cells in the icosahedron's stellation diagram. That is, every three int ...
has 92 vertices. There are 92
Johnson solid In geometry, a Johnson solid, sometimes also known as a Johnson–Zalgaller solid, is a convex polyhedron whose faces are regular polygons. They are sometimes defined to exclude the uniform polyhedrons. There are ninety-two Solid geometry, s ...
s.


Abstract algebra

92 is the total number of objects that are permuted by the series of five finite, simple Mathieu groups \mathbb M_ (collectively), as defined by permutations based on elements n \in \. Half of 92 is 46 (the largest even number that is not the sum of two
abundant number In number theory, an abundant number or excessive number is a positive integer for which the sum of its proper divisors is greater than the number. The integer 12 is the first abundant number. Its proper divisors are 1, 2, 3, 4 and 6 for a total ...
s), which is the number of
maximal subgroup In mathematics, the term maximal subgroup is used to mean slightly different things in different areas of algebra. In group theory, a maximal subgroup ''H'' of a group ''G'' is a proper subgroup, such that no proper subgroup ''K'' contains ''H'' ...
s of the friendly giant \mathbb F_, the largest "
sporadic The qualification sporadic, indicating that occurrences of some phenomenon are rare and not systematic, can be used for: Mathematics * Sporadic group, any of a small number of finite groups that do not fit into any infinite family of groups Medic ...
" finite simple group.


In different bases

92 is
palindromic A palindrome ( /ˈpæl.ɪn.droʊm/) is a word, number, phrase, or other sequence of symbols that reads the same backwards as forwards, such as ''madam'' or '' racecar'', the date " 02/02/2020" and the sentence: "A man, a plan, a canal – Pana ...
in other bases, where it is represented as 232 6, 1617, 4422, and 2245. There are 92 numbers n such that 2^ does not contain all digits in
base ten The decimal numeral system (also called the base-ten positional numeral system and denary or decanary) is the standard system for denoting integer and non-integer numbers. It is the extension to non-integer numbers (''decimal fractions'') of t ...
(the largest such number is 168, where 68 is the smallest number with such a representation containing all digits, followed by 70 and 79).


In other fields

Ninety-two is also: * The number which runs through almost every single of British film-maker
Peter Greenaway Peter Greenaway, (born 5 April 1942) is a British film director, screenwriter and artist. His films are noted for the distinct influence of Renaissance and Baroque painting, and Mannerist painting in particular. Common traits in his films a ...
's films. This number has special association with the fictional character of Greenaway's creation, Tulse Luper. It is said the number itself is based on a mathematical error in calculations concerning
John Cage John Milton Cage Jr. (September 5, 1912 – August 12, 1992) was an American composer and music theorist. A pioneer of indeterminacy in music, electroacoustic music, and Extended technique, non-standard use of musical instruments, Cage was one ...
's work Indeterminacy. See '' The Falls'' for extensive use of this number. * The international calling code for
Pakistan Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia. It is the List of countries and dependencies by population, fifth-most populous country, with a population of over 241.5 million, having the Islam by country# ...


References

{{DEFAULTSORT:92 (Number) Integers