262 (Number)
| ||||
|---|---|---|---|---|
| Cardinal | two hundred sixty-two | |||
| Ordinal | 262nd (two hundred sixty-second) | |||
| Factorization | 2 × 131 | |||
| Divisors | 1, 2, 131, 262 | |||
| Greek numeral | ΣΞΒ´ | |||
| Roman numeral | CCLXII | |||
| Binary | 1000001102 | |||
| Ternary | 1002013 | |||
| Quaternary | 100124 | |||
| Quinary | 20225 | |||
| Senary | 11146 | |||
| Octal | 4068 | |||
| Duodecimal | 19A12 | |||
| Hexadecimal | 10616 | |||
| Vigesimal | D220 | |||
| Base 36 | 7A36 | |||
262 (two hundred and sixty-two) is a natural number preceded by the number 261 and followed by 263. It has the prime factorization 2·131.
Mathematical properties
There are four divisors of this number, the divisors being 1, 2, 131, and 262 itself, which makes it a semiprime.
It is the sixth meandric number....[1] and the ninth open meandric number[2]
As it cannot be divided into the sum of the proper divisors of any number, it is the 17th untouchable number[3]
As it eventually reaches 1 when replaced by the sum of the square of each digit, it is the 40th 10-happy number[4]
As 262 is 262 backwards, it is a palindrome number[5]
262 was once the lowest number not to have its own Wikipedia page for more than three years since March 2017 when 261 was first created[6], this making it a candidate for the lowest uninteresting Number according to the definition given by Alex Bellos.[7] As of March 2021[update], the smallest natural number without its own Wikipedia page is 264, and the smallest prime number without its own Wikipedia page is 283.
In other fields
262 may refer to:
- 262 AD, a calendar year
- 262 BC, a calendar year
- +262, a country calling code, see Telephone numbers in France
- Area code 262, which covers most of Southeast Wisconsin
- Military/ Transportation
- Aérospatiale N 262, a French airliner of the 1960s
- Messerschmitt Me 262, an airplane of the 1940s
- VMM-262, a United States Marine Corps squadron
- 2-6-2, or called a "Prairie", a locomotive wheel arrangement
- Hill 262, the place where a battle was fought in 19–21 August, 1944
- Science
- A-262, an organophosphate nerve agent
- E262, Sodium Acetate
- NGC 262, a huge spiral galaxy in the cluster LGG 14
- 262 Valda, a minor planet
- Kosmos 262, a 1968 Soviet Satellite
- See also
References
- ↑ Sloane, N. J. A. (ed.). "Sequence A005315 (Closed meandric numbers (or meanders): number of ways a loop can cross a road 2n times)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ Sloane, N. J. A. (ed.). "Sequence A005316 (Meandric numbers: number of ways a river can cross a road n times)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ Sloane, N. J. A. (ed.). "Sequence A005114 (Untouchable numbers, also called nonaliquot numbers: impossible values for the sum of aliquot parts function)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ Sloane, N. J. A. (ed.). "Sequence A007770 (Happy numbers: numbers whose trajectory under iteration of sum of squares of digits map includes 1)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ Sloane, N. J. A. (ed.). "Sequence A002113 (Palindromes in base 10)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "261 (number): Revision history - Wikipedia". en.wikipedia.org. Retrieved 2022-05-16.
- ↑ Bellos, Alex (June 2014). The Grapes of Math: How Life Reflects Numbers and Numbers Reflect Life. illus. The Surreal McCoy (1st Simon & Schuster hardcover ed.). N.Y.: Simon & Schuster. pp. 238 & 319 (quoting p. 319). ISBN 978-1-4516-4009-0. Search this book on
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