256655392 has 48 divisors (see below), whose sum is σ = 611452800. Its totient is φ = 103523328.

The previous prime is 256655387. The next prime is 256655393. The reversal of 256655392 is 293556652.

It is not an unprimeable number, because it can be changed into a prime (256655393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29892 + ... + 37507.

It is an arithmetic number, because the mean of its divisors is an integer number (12738600).

Almost surely, 2^256655392 is an apocalyptic number.

It is an amenable number.

256655392 is an abundant number, since it is smaller than the sum of its proper divisors (354797408).

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

256655392 is a wasteful number, since it uses less digits than its factorization.

256655392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67433 (or 67425 counting only the distinct ones).

The product of its digits is 486000, while the sum is 43.

The square root of 256655392 is about 16020.4679082728. The cubic root of 256655392 is about 635.5018183837.

The spelling of 256655392 in words is "two hundred fifty-six million, six hundred fifty-five thousand, three hundred ninety-two".