28205725024 has 24 divisors (see below), whose sum is σ = 56471211720. Its totient is φ = 13863830016.

The previous prime is 28205724991. The next prime is 28205725039. The reversal of 28205725024 is 42052750282.

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, 7467849 + ... + 7471624.

It is an arithmetic number, because the mean of its divisors is an integer number (2352967155).

Almost surely, 2^28205725024 is an apocalyptic number.

It is an amenable number.

28205725024 is an abundant number, since it is smaller than the sum of its proper divisors (28265486696).

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

28205725024 is a wasteful number, since it uses less digits than its factorization.

28205725024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14939542 (or 14939534 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 37.

The spelling of 28205725024 in words is "twenty-eight billion, two hundred five million, seven hundred twenty-five thousand, twenty-four".