28920580724 has 24 divisors (see below), whose sum is σ = 57972942720. Its totient is φ = 12366295776.

The previous prime is 28920580709. The next prime is 28920580771. The reversal of 28920580724 is 42708502982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1164107 + ... + 1188690.

It is an arithmetic number, because the mean of its divisors is an integer number (2415539280).

Almost surely, 2^28920580724 is an apocalyptic number.

It is an amenable number.

28920580724 is an abundant number, since it is smaller than the sum of its proper divisors (29052361996).

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

28920580724 is a wasteful number, since it uses less digits than its factorization.

28920580724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2353247 (or 2353245 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 28920580724 in words is "twenty-eight billion, nine hundred twenty million, five hundred eighty thousand, seven hundred twenty-four".