256588 has 12 divisors (see below), whose sum is σ = 468720. Its totient is φ = 122672.

The previous prime is 256579. The next prime is 256589. The reversal of 256588 is 885652.

256588 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (256589) 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, 1303 + ... + 1486.

It is an arithmetic number, because the mean of its divisors is an integer number (39060).

2²⁵⁶⁵⁸⁸ is an apocalyptic number.

It is an amenable number.

256588 is a deficient number, since it is larger than the sum of its proper divisors (212132).

256588 is a wasteful number, since it uses less digits than its factorization.

256588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2816 (or 2814 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 256588 is about 506.5451608692. The cubic root of 256588 is about 63.5446190632.

The spelling of 256588 in words is "two hundred fifty-six thousand, five hundred eighty-eight".