28536580864 has 36 divisors (see below), whose sum is σ = 62140032360. Its totient is φ = 12971171840.

The previous prime is 28536580859. The next prime is 28536580883. The reversal of 28536580864 is 46808563582.

It is a super-2 number, since 2×28536580864² (a number of 22 digits) contains 22 as substring.

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, 5064049 + ... + 5069680.

It is an arithmetic number, because the mean of its divisors is an integer number (1726112010).

Almost surely, 2^28536580864 is an apocalyptic number.

It is an amenable number.

28536580864 is an abundant number, since it is smaller than the sum of its proper divisors (33603451496).

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

28536580864 is a wasteful number, since it uses less digits than its factorization.

28536580864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133756 (or 10133742 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 55.

The spelling of 28536580864 in words is "twenty-eight billion, five hundred thirty-six million, five hundred eighty thousand, eight hundred sixty-four".