256267 has 4 divisors (see below), whose sum is σ = 279576. Its totient is φ = 232960.

The previous prime is 256219. The next prime is 256279. The reversal of 256267 is 762652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256567) 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, 11638 + ... + 11659.

It is an arithmetic number, because the mean of its divisors is an integer number (69894).

2²⁵⁶²⁶⁷ is an apocalyptic number.

256267 is a deficient number, since it is larger than the sum of its proper divisors (23309).

256267 is a wasteful number, since it uses less digits than its factorization.

256267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23308.

The product of its digits is 5040, while the sum is 28.

The square root of 256267 is about 506.2282094076. The cubic root of 256267 is about 63.5181092046.

The spelling of 256267 in words is "two hundred fifty-six thousand, two hundred sixty-seven".