256603460 has 12 divisors (see below), whose sum is σ = 538867308. Its totient is φ = 102641376.

The previous prime is 256603453. The next prime is 256603471. The reversal of 256603460 is 64306652.

It can be written as a sum of positive squares in 2 ways, for example, as 87759424 + 168844036 = 9368^2 + 12994^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6415067 + ... + 6415106.

It is an arithmetic number, because the mean of its divisors is an integer number (44905609).

Almost surely, 2^256603460 is an apocalyptic number.

256603460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256603460 is an abundant number, since it is smaller than the sum of its proper divisors (282263848).

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

256603460 is a wasteful number, since it uses less digits than its factorization.

256603460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12830182 (or 12830180 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 256603460 is about 16018.8470246769. The cubic root of 256603460 is about 635.4589527259.

The spelling of 256603460 in words is "two hundred fifty-six million, six hundred three thousand, four hundred sixty".