28533184164 has 36 divisors (see below), whose sum is σ = 72132338460. Its totient is φ = 9510166080.

The previous prime is 28533184139. The next prime is 28533184193. The reversal of 28533184164 is 46148133582.

28533184164 is a `hidden beast` number, since 2 + 8 + 533 + 18 + 41 + 64 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9064563264 + 19468620900 = 95208^2 + 139530^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430954 + ... + 492734.

Almost surely, 2^28533184164 is an apocalyptic number.

It is an amenable number.

28533184164 is an abundant number, since it is smaller than the sum of its proper divisors (43599154296).

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

28533184164 is a wasteful number, since it uses less digits than its factorization.

28533184164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74620 (or 74615 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The spelling of 28533184164 in words is "twenty-eight billion, five hundred thirty-three million, one hundred eighty-four thousand, one hundred sixty-four".