256613372 has 12 divisors (see below), whose sum is σ = 449202936. Its totient is φ = 128269680.

The previous prime is 256613353. The next prime is 256613387. The reversal of 256613372 is 273316652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11543 + ... + 25425.

It is an arithmetic number, because the mean of its divisors is an integer number (37433578).

Almost surely, 2^256613372 is an apocalyptic number.

It is an amenable number.

256613372 is a deficient number, since it is larger than the sum of its proper divisors (192589564).

256613372 is a wasteful number, since it uses less digits than its factorization.

256613372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18508 (or 18506 counting only the distinct ones).

The product of its digits is 45360, while the sum is 35.

The square root of 256613372 is about 16019.1564072519. The cubic root of 256613372 is about 635.4671347253.

The spelling of 256613372 in words is "two hundred fifty-six million, six hundred thirteen thousand, three hundred seventy-two".