268256 has 24 divisors (see below), whose sum is σ = 539784. Its totient is φ = 131200.

The previous prime is 268253. The next prime is 268267. The reversal of 268256 is 652862.

It is a super-2 number, since 2×268256² = 143922563072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2606 + ... + 2706.

It is an arithmetic number, because the mean of its divisors is an integer number (22491).

2²⁶⁸²⁵⁶ is an apocalyptic number.

It is an amenable number.

268256 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268256 is a wasteful number, since it uses less digits than its factorization.

268256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 186 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 268256 is about 517.9343587753. The cubic root of 268256 is about 64.4935794743.

The spelling of 268256 in words is "two hundred sixty-eight thousand, two hundred fifty-six".