28732174452 has 72 divisors (see below), whose sum is σ = 76481656160. Its totient is φ = 9069693120.

The previous prime is 28732174421. The next prime is 28732174477. The reversal of 28732174452 is 25447123782.

28732174452 is a `hidden beast` number, since 28 + 7 + 3 + 2 + 174 + 452 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28732174398 and 28732174407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2086863 + ... + 2100585.

Almost surely, 2^28732174452 is an apocalyptic number.

It is an amenable number.

28732174452 is an abundant number, since it is smaller than the sum of its proper divisors (47749481708).

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

28732174452 is a wasteful number, since it uses less digits than its factorization.

28732174452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16813 (or 16808 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The spelling of 28732174452 in words is "twenty-eight billion, seven hundred thirty-two million, one hundred seventy-four thousand, four hundred fifty-two".