256349232 has 40 divisors (see below), whose sum is σ = 735818480. Its totient is φ = 85449600.

The previous prime is 256349231. The next prime is 256349257. The reversal of 256349232 is 232943652.

It is a happy number.

256349232 is a `hidden beast` number, since 2 + 563 + 4 + 92 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256349231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296269 + ... + 297132.

It is an arithmetic number, because the mean of its divisors is an integer number (18395462).

Almost surely, 2^256349232 is an apocalyptic number.

It is an amenable number.

256349232 is an abundant number, since it is smaller than the sum of its proper divisors (479469248).

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

256349232 is a wasteful number, since it uses less digits than its factorization.

256349232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593418 (or 593406 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 256349232 is about 16010.9097805215. The cubic root of 256349232 is about 635.2490246135.

The spelling of 256349232 in words is "two hundred fifty-six million, three hundred forty-nine thousand, two hundred thirty-two".