256328392908 has 54 divisors (see below), whose sum is σ = 695781819516. Its totient is φ = 73233176016.

The previous prime is 256328392897. The next prime is 256328392927. The reversal of 256328392908 is 809293823652.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12266413 + ... + 12287291.

Almost surely, 2^256328392908 is an apocalyptic number.

256328392908 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

256328392908 is an abundant number, since it is smaller than the sum of its proper divisors (439453426608).

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

256328392908 is an frugal number, since it uses more digits than its factorization.

256328392908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41779 (or 20891 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 256328392908 in words is "two hundred fifty-six billion, three hundred twenty-eight million, three hundred ninety-two thousand, nine hundred eight".