28452591564 has 48 divisors (see below), whose sum is σ = 67311191808. Its totient is φ = 9352925248.

The previous prime is 28452591529. The next prime is 28452591571. The reversal of 28452591564 is 46519525482.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529129 + ... + 580415.

It is an arithmetic number, because the mean of its divisors is an integer number (1402316496).

Almost surely, 2^28452591564 is an apocalyptic number.

It is an amenable number.

28452591564 is an abundant number, since it is smaller than the sum of its proper divisors (38858600244).

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

28452591564 is a wasteful number, since it uses less digits than its factorization.

28452591564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51934 (or 51932 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 51.

The spelling of 28452591564 in words is "twenty-eight billion, four hundred fifty-two million, five hundred ninety-one thousand, five hundred sixty-four".