256528624 has 40 divisors (see below), whose sum is σ = 543143808. Its totient is φ = 116402880.

The previous prime is 256528619. The next prime is 256528631. The reversal of 256528624 is 426825652.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158829 + ... + 160435.

Almost surely, 2^256528624 is an apocalyptic number.

It is an amenable number.

256528624 is an abundant number, since it is smaller than the sum of its proper divisors (286615184).

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

256528624 is a wasteful number, since it uses less digits than its factorization.

256528624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533 (or 2527 counting only the distinct ones).

The product of its digits is 230400, while the sum is 40.

The square root of 256528624 is about 16016.5109808597. The cubic root of 256528624 is about 635.3971714987.

The spelling of 256528624 in words is "two hundred fifty-six million, five hundred twenty-eight thousand, six hundred twenty-four".