2015056644 has 24 divisors (see below), whose sum is σ = 4726165920. Its totient is φ = 668204544.

The previous prime is 2015056639. The next prime is 2015056697. The reversal of 2015056644 is 4466505102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432714 + ... + 437345.

It is an arithmetic number, because the mean of its divisors is an integer number (196923580).

Almost surely, 2^2015056644 is an apocalyptic number.

It is an amenable number.

2015056644 is an abundant number, since it is smaller than the sum of its proper divisors (2711109276).

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

2015056644 is a wasteful number, since it uses less digits than its factorization.

2015056644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870259 (or 870257 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 2015056644 is about 44889.3823080692. The cubic root of 2015056644 is about 1263.0748459409.

The spelling of 2015056644 in words is "two billion, fifteen million, fifty-six thousand, six hundred forty-four".