28531324 has 12 divisors (see below), whose sum is σ = 50562400. Its totient is φ = 14084928.

The previous prime is 28531297. The next prime is 28531337. The reversal of 28531324 is 42313582.

It is a junction number, because it is equal to n+sod(n) for n = 28531292 and 28531301.

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, 44829 + ... + 45460.

Almost surely, 2^28531324 is an apocalyptic number.

It is an amenable number.

28531324 is a deficient number, since it is larger than the sum of its proper divisors (22031076).

28531324 is a wasteful number, since it uses less digits than its factorization.

28531324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90372 (or 90370 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 28531324 is about 5341.4720817393. The cubic root of 28531324 is about 305.5676037906.

The spelling of 28531324 in words is "twenty-eight million, five hundred thirty-one thousand, three hundred twenty-four".