256336956 has 18 divisors (see below), whose sum is σ = 647962952. Its totient is φ = 85445640.

The previous prime is 256336903. The next prime is 256336957. The reversal of 256336956 is 659633652.

256336956 is a `hidden beast` number, since 2 + 5 + 633 + 6 + 9 + 5 + 6 = 666.

256336956 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×256336956² = 131417270022691872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256336957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3560200 + ... + 3560271.

Almost surely, 2^256336956 is an apocalyptic number.

It is an amenable number.

256336956 is an abundant number, since it is smaller than the sum of its proper divisors (391625996).

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

256336956 is a wasteful number, since it uses less digits than its factorization.

256336956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7120481 (or 7120476 counting only the distinct ones).

The product of its digits is 874800, while the sum is 45.

The square root of 256336956 is about 16010.5264123326. The cubic root of 256336956 is about 635.2388842261.

The spelling of 256336956 in words is "two hundred fifty-six million, three hundred thirty-six thousand, nine hundred fifty-six".