268 (number)
| ||||
|---|---|---|---|---|
| Cardinal | two hundred sixty-eight | |||
| Ordinal | 268th (two hundred sixty-eighth) | |||
| Factorization | 22 × 67 | |||
| Divisors | 1, 2, 4, 67, 134, 268 | |||
| Greek numeral | ΣΞΗ´ | |||
| Roman numeral | CCLXVIII, cclxviii | |||
| Binary | 1000011002 | |||
| Ternary | 1002213 | |||
| Senary | 11246 | |||
| Octal | 4148 | |||
| Duodecimal | 1A412 | |||
| Hexadecimal | 10C16 | |||
268 (two hundred [and] sixty-eight) is the natural number following 267 and preceding 269.
In mathematics
[edit]- 268 is an even composite number with two prime factors,[1] but one of the prime factors is repeated: 268 = 67*2*2.
- 268 is the smallest number whose product of digits is 6 times the sum of its digits.
- 268 is untouchable which means that it is not the sum of the proper divisors of any number[2]
- 268 is the sum of the consecutive primes 131 and 137.[3]
References
[edit]- ^ "Facts about the integer". mathworld.wolfram.com.
- ^ "Untouchable numbers". mathworld.worfram.com.
- ^ "Twin prime numbers". mathworld.wolfram.com.
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