28933528 has 16 divisors (see below), whose sum is σ = 58423680. Its totient is φ = 13353888.

The previous prime is 28933501. The next prime is 28933543. The reversal of 28933528 is 82533982.

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, 139000 + ... + 139207.

It is an arithmetic number, because the mean of its divisors is an integer number (3651480).

Almost surely, 2^28933528 is an apocalyptic number.

It is an amenable number.

28933528 is an abundant number, since it is smaller than the sum of its proper divisors (29490152).

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

28933528 is a wasteful number, since it uses less digits than its factorization.

28933528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278226 (or 278222 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 28933528 is about 5378.9894961786. The cubic root of 28933528 is about 306.9967638573.

The spelling of 28933528 in words is "twenty-eight million, nine hundred thirty-three thousand, five hundred twenty-eight".