This article may contain indiscriminate, excessive, or irrelevant examples. (March 2010) |

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Cardinal | twenty-six | |||

Ordinal | 26th (twenty-sixth) | |||

Factorization | 2 × 13 | |||

Divisors | 1, 2, 13, 26 | |||

Greek numeral | ΚϚ´ | |||

Roman numeral | XXVI | |||

Binary | 11010_{2} | |||

Ternary | 222_{3} | |||

Quaternary | 122_{4} | |||

Quinary | 101_{5} | |||

Senary | 42_{6} | |||

Octal | 32_{8} | |||

Duodecimal | 22_{12} | |||

Hexadecimal | 1A_{16} | |||

Vigesimal | 16_{20} | |||

Base 36 | Q_{36} |

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

## Contents

## In mathematics

26 is the only integer that is one greater than a square (5^{2} + 1) and one less than a cube (3^{3} − 1).^{[1]}

A rhombicuboctahedron has twenty-six faces.

When a 3 × 3 × 3 cube is made of twenty-seven unit cubes, twenty-six of them are viewable as the exterior layer.

There are 26 sporadic groups.

The 26-dimensional Lorentzian unimodular lattice II_{25,1} plays a significant role in sphere packing problems and the classification of finite simple groups. In particular, the Leech lattice is obtained in a simple way as a subquotient.

### Properties of its positional representation in certain radixes

Twenty-six is a repdigit in base three (222_{3}) and in base twelve (22_{12}).

In base ten, 26 is the smallest number that is not a palindrome to have a square (26^{2} = 676) that is a palindrome.

## In science

- The atomic number of iron.
- The number of spacetime dimensions in bosonic string theory.

### Astronomy

- Messier object M26, a magnitude 9.5 open cluster in the constellation Scutum.
- The New General Catalogue object NGC 26, a spiral galaxy in the constellation Pegasus.

## 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 (
*Yehowah*). - GOD=26=G7+O15+D4 in
*Simple6,74 English7,74 Gematria8,74*('The Key': A=1, B2, C3, ..., Z26). - The Greek Strongs number G26 is "
*Agape*", which means "*Love*". - The expression "
*For His mercy endures forever*" is found verbatim in English and the original Hebrew 26 times in Psalm 136. The expression is found once in each of the 26 verses. - According to Jewish chronology, God gave the Torah in the 26th generation since Creation.

## In sports

- The number of complete miles in a marathon (26 miles and 385 yards).

## In other fields

**Twenty-six** is:

- The sixth track of After Laughter, the fifth studio album by american alternative band Paramore
- The eighth track of The Balcony (album), the first studio album by british modern rock band Catfish and the bottlemen
- In Microsoft Windows list of Alt Codes, the combination
`Alt`+`2``6`yields the "right arrow" symbol → - The letter
**Z**is the 26th and last letter of the English alphabet. - A 2003 novel by Leo McKay, Jr.
- The name of the Australian alternative rock band, 26
- The number of letters in the basic Latin alphabet, if capital letters are not distinguished from lowercase letters.
- The total number of cases on
*Deal or No Deal*(22 cases in UK version). - Often (in the United States) the number of episodes in a television program each year; this allows one new show per week for half the year, and one rerun per week for the rest of the year.
- The alias of punk rock singer Doc Corbin Dart
- The age at which males could no longer be drafted in the United States
- A dice game popular in the Midwest United States from the 1930s to 1950s; players had to roll a chosen number 26 times or more, exactly 13 or fewer than 10.
^{[2]} - In a normal deck of cards, there are 26 red cards and 26 black cards.
- The number of Cantons of Switzerland.
- The number of bones in the normal human foot and ankle.
- XXVI Holdings, Inc, named after the Roman numerals for the number 26, is a holding company that is part of Alphabet, Inc., the structure that ultimately owns Google
- The number of counties in the Republic of Ireland.

## See also

## References

**^**"The number 26, between 25 and 27" (PDF). Retrieved 2012-06-05.**^**"Twenty-six." Encyclopædia Britannica.*Encyclopædia Britannica 2007 Ultimate Reference Suite*. Chicago: Encyclopædia Britannica, 2007.

## External links

- Prime Curios! 26 from the Prime Pages