26 (number)
Encyclopedia : 2 : 26 : 26N : 26 (number)
26 (twenty-six) is the natural number following 25 and preceding 27.
| Cardinal | 26 twenty-six |
| Ordinal | 26th twenty-sixth |
| Factorization | [2 \cdot 13] |
| Roman numeral | XXVI |
| Binary | 11010 |
| Hexadecimal | 1A |
In mathematics
Twenty-six is a composite number, its proper divisors being 1, 2, and 13. 26 is the only number between a square number and a cube number, the numbers being 25 (5 squared) and 27 (3 cubed).There is no solution to the equation φ(x) = 26, making 26 a nontotient. Nor is there a solution to x - φ(x) = 26, making 26 a noncototient.
In the classification of finite simple groups there are 26 sporadic groups.
26 is a repdigit in base 3 (222).
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
- The Saros [number] of the solar eclipse series which began on -2022 March 29 and ended on -724 May 17. The duration of Saros series 26 was 1298.1 years, and it contained 73 solar eclipses.
- The Saros [number] of the lunar eclipse series which began on -1937 August 28 and ended on -386 March 17. The duration of Saros series 26 was 1550.5 years, and it contained 87 lunar eclipses.
In religion
- 26 is the gematria of the four-letter name of God
- According to Jewish chronology, God gave the Torah in the 26th generation since Creation
In other fields
Twenty-six is:- The number of letters in the English alphabet, if majuscules are not distinguished from minuscules.
- The number of miles in a marathon rounded down (26 miles and 385 yards).
- The designation of Interstate 26, a freeway that runs from South Carolina to Tennessee.
- Michigan is the 26th state to be admitted to the United States.
- Often 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 name of a baby dinosaur in Dinotopia series.
- The alias of semi-famous punk rock singer Doc Corbin Dart
- The age at which males can no longer be drafted in the United States
Historical years
26 A.D., 26 B.C., 1926, 2026, etc.
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