28522732 has 12 divisors (see below), whose sum is σ = 57045520. Its totient is φ = 12224016.

The previous prime is 28522727. The next prime is 28522733. The reversal of 28522732 is 23722582.

28522732 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28522694 and 28522703.

It is not an unprimeable number, because it can be changed into a prime (28522733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509307 + ... + 509362.

Almost surely, 2^28522732 is an apocalyptic number.

It is an amenable number.

28522732 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28522732 is a wasteful number, since it uses less digits than its factorization.

28522732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018680 (or 1018678 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 28522732 is about 5340.6677485124. The cubic root of 28522732 is about 305.5369275598.

The spelling of 28522732 in words is "twenty-eight million, five hundred twenty-two thousand, seven hundred thirty-two".