28800520 has 32 divisors (see below), whose sum is σ = 74059200. Its totient is φ = 9874368.

The previous prime is 28800517. The next prime is 28800547. The reversal of 28800520 is 2500882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51150 + ... + 51709.

It is an arithmetic number, because the mean of its divisors is an integer number (2314350).

Almost surely, 2^28800520 is an apocalyptic number.

28800520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28800520 is an abundant number, since it is smaller than the sum of its proper divisors (45258680).

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

28800520 is a wasteful number, since it uses less digits than its factorization.

28800520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102877 (or 102873 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 28800520 is about 5366.6115939203. The cubic root of 28800520 is about 306.5256177653.

The spelling of 28800520 in words is "twenty-eight million, eight hundred thousand, five hundred twenty".