256910 has 16 divisors (see below), whose sum is σ = 482976. Its totient is φ = 98208.

The previous prime is 256903. The next prime is 256931. The reversal of 256910 is 19652.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329 + ... + 788.

It is an arithmetic number, because the mean of its divisors is an integer number (30186).

2²⁵⁶⁹¹⁰ is an apocalyptic number.

256910 is a deficient number, since it is larger than the sum of its proper divisors (226066).

256910 is a wasteful number, since it uses less digits than its factorization.

256910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 256910 is about 506.8629005954. The cubic root of 256910 is about 63.5711893030.

The spelling of 256910 in words is "two hundred fifty-six thousand, nine hundred ten".