256055216 has 20 divisors (see below), whose sum is σ = 496811952. Its totient is φ = 127845696.

The previous prime is 256055213. The next prime is 256055237. The reversal of 256055216 is 612550652.

256055216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (256055213) 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, 626 + ... + 22638.

Almost surely, 2^256055216 is an apocalyptic number.

It is an amenable number.

256055216 is a deficient number, since it is larger than the sum of its proper divisors (240756736).

256055216 is a wasteful number, since it uses less digits than its factorization.

256055216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22748 (or 22742 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 256055216 is about 16001.7254069678. The cubic root of 256055216 is about 635.0060685141.

The spelling of 256055216 in words is "two hundred fifty-six million, fifty-five thousand, two hundred sixteen".