28332508 has 24 divisors (see below), whose sum is σ = 50722560. Its totient is φ = 13843440.

The previous prime is 28332463. The next prime is 28332511. The reversal of 28332508 is 80523382.

It is a self number, because there is not a number n which added to its sum of digits gives 28332508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63735 + ... + 64177.

It is an arithmetic number, because the mean of its divisors is an integer number (2113440).

Almost surely, 2^28332508 is an apocalyptic number.

It is an amenable number.

28332508 is a deficient number, since it is larger than the sum of its proper divisors (22390052).

28332508 is a wasteful number, since it uses less digits than its factorization.

28332508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 28332508 is about 5322.8289470920. The cubic root of 28332508 is about 304.8561823078.

The spelling of 28332508 in words is "twenty-eight million, three hundred thirty-two thousand, five hundred eight".