26 (number)

"Number 26" and "XXVI" redirect here. For the bank, see N26. For the company, see XXVI Holdings.
← 25 26 27 →
Cardinaltwenty-six
Ordinal26th
(twenty-sixth)
Factorization2 × 13
Divisors1, 2, 13, 26
Greek numeralΚϚ´
Roman numeralXXVI, xxvi
Binary110102
Ternary2223
Senary426
Octal328
Duodecimal2212
Hexadecimal1A16

26 (twenty-six) is the natural number following 25 and preceding 27.

In mathematics

Poster designed to depict the speciality of the number 26

26 is a composite number. 26 is also a telephone number, specifically, the number of ways of connecting 5 points with pairwise connections.[1]

Group Theory

There are 26 sporadic groups.[2]

The 26-dimensional Lorentzian unimodular lattice II25,1 plays a significant role in sphere packing problems and the classification of finite simple groups.

In religion

  • 26 is the gematric number, being the sum of the Hebrew characters (Hebrew: יהוה) being the name of the god of Israel – YHWH (Yahweh). 26 is also the gematric number for GOD with the corresponding substitutions in English (i.e. A=1, B=2, C=3, and so on)
  • In the Tenrikyo religion of Japan, 26 is frequently used, since it marks the lunar calendar date of its founder Nakayama Miki's first divine revelation and also her death.

In science

In other fields

References

  1. ^ "Sloane's A000085 : Involution numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2021-12-03.
  2. ^ Wilson, Robert (2009-12-14). The Finite Simple Groups. Springer Science & Business Media. p. 183. ISBN 978-1-84800-987-5. In this chapter we introduce the 26 sporadic simple groups.
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