28080038164 has 12 divisors (see below), whose sum is σ = 49141609300. Its totient is φ = 14039578368.

The previous prime is 28080038131. The next prime is 28080038177. The reversal of 28080038164 is 46183008082.

It can be written as a sum of positive squares in 2 ways, for example, as 11547221764 + 16532816400 = 107458^2 + 128580^2 .

It is a congruent number.

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, 63652 + ... + 245380.

Almost surely, 2^28080038164 is an apocalyptic number.

It is an amenable number.

28080038164 is a deficient number, since it is larger than the sum of its proper divisors (21061571136).

28080038164 is a wasteful number, since it uses less digits than its factorization.

28080038164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220362 (or 220360 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 28080038164 in words is "twenty-eight billion, eighty million, thirty-eight thousand, one hundred sixty-four".