2056628864 has 16 divisors (see below), whose sum is σ = 4097190570. Its totient is φ = 1028314368.

The previous prime is 2056628857. The next prime is 2056628911. The reversal of 2056628864 is 4688266502.

It can be written as a sum of positive squares in only one way, i.e., 1590414400 + 466214464 = 39880^2 + 21592^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8033579 + ... + 8033834.

Almost surely, 2^2056628864 is an apocalyptic number.

It is an amenable number.

2056628864 is a deficient number, since it is larger than the sum of its proper divisors (2040561706).

2056628864 is an equidigital number, since it uses as much as digits as its factorization.

2056628864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16067427 (or 16067415 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 47.

The square root of 2056628864 is about 45350.0701653261. The cubic root of 2056628864 is about 1271.7018670246.

The spelling of 2056628864 in words is "two billion, fifty-six million, six hundred twenty-eight thousand, eight hundred sixty-four".