256764936 has 32 divisors (see below), whose sum is σ = 675698400. Its totient is φ = 81083520.

The previous prime is 256764881. The next prime is 256764943. The reversal of 256764936 is 639467652.

256764936 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 281085 + ... + 281996.

It is an arithmetic number, because the mean of its divisors is an integer number (21115575).

Almost surely, 2^256764936 is an apocalyptic number.

It is an amenable number.

256764936 is an abundant number, since it is smaller than the sum of its proper divisors (418933464).

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

256764936 is a wasteful number, since it uses less digits than its factorization.

256764936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563109 (or 563105 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 48.

The square root of 256764936 is about 16023.8864199669. The cubic root of 256764936 is about 635.5922191201.

The spelling of 256764936 in words is "two hundred fifty-six million, seven hundred sixty-four thousand, nine hundred thirty-six".