256956912 has 90 divisors (see below), whose sum is σ = 759116592. Its totient is φ = 81127872.

The previous prime is 256956899. The next prime is 256956913. The reversal of 256956912 is 219659652.

It is a happy number.

256956912 is a `hidden beast` number, since 25 + 69 + 569 + 1 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256956913) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49513 + ... + 54455.

Almost surely, 2^256956912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256956912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379558296).

256956912 is an abundant number, since it is smaller than the sum of its proper divisors (502159680).

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

256956912 is a wasteful number, since it uses less digits than its factorization.

256956912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4995 (or 4967 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 256956912 is about 16029.8756077519. The cubic root of 256956912 is about 635.7505845320.

The spelling of 256956912 in words is "two hundred fifty-six million, nine hundred fifty-six thousand, nine hundred twelve".