256428528 has 40 divisors (see below), whose sum is σ = 683813376. Its totient is φ = 82718400.

The previous prime is 256428481. The next prime is 256428539. The reversal of 256428528 is 825824652.

256428528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 256428528.

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, 84678 + ... + 87653.

Almost surely, 2^256428528 is an apocalyptic number.

It is an amenable number.

256428528 is an abundant number, since it is smaller than the sum of its proper divisors (427384848).

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

256428528 is a wasteful number, since it uses less digits than its factorization.

256428528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172373 (or 172367 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 256428528 is about 16013.3859005521. The cubic root of 256428528 is about 635.3145179683.

The spelling of 256428528 in words is "two hundred fifty-six million, four hundred twenty-eight thousand, five hundred twenty-eight".