1056731256 has 72 divisors (see below), whose sum is σ = 3329253720. Its totient is φ = 301922208.

The previous prime is 1056731239. The next prime is 1056731293. The reversal of 1056731256 is 6521376501.

1056731256 is a `hidden beast` number, since 10 + 567 + 31 + 2 + 56 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×1056731256² = 2233361894814675072, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1056731256.

It is a congruent number.

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, 146236 + ... + 153291.

It is an arithmetic number, because the mean of its divisors is an integer number (46239635).

Almost surely, 2^1056731256 is an apocalyptic number.

It is an amenable number.

1056731256 is an abundant number, since it is smaller than the sum of its proper divisors (2272522464).

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

1056731256 is a wasteful number, since it uses less digits than its factorization.

1056731256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299553 (or 299539 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 1056731256 is about 32507.4030952951. The cubic root of 1056731256 is about 1018.5636761833.

It can be divided in two parts, 105673 and 1256, that added together give a square (106929 = 327²).

The spelling of 1056731256 in words is "one billion, fifty-six million, seven hundred thirty-one thousand, two hundred fifty-six".