28737087904 has 48 divisors (see below), whose sum is σ = 64673235648. Its totient is φ = 12313078272.

The previous prime is 28737087889. The next prime is 28737087919. The reversal of 28737087904 is 40978073782.

It is an interprime number because it is at equal distance from previous prime (28737087889) and next prime (28737087919).

It is a super-2 number, since 2×28737087904² (a number of 22 digits) contains 22 as substring.

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, 1185732 + ... + 1209724.

It is an arithmetic number, because the mean of its divisors is an integer number (1347359076).

Almost surely, 2^28737087904 is an apocalyptic number.

It is an amenable number.

28737087904 is an abundant number, since it is smaller than the sum of its proper divisors (35936147744).

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

28737087904 is a wasteful number, since it uses less digits than its factorization.

28737087904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29357 (or 29349 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 55.

The spelling of 28737087904 in words is "twenty-eight billion, seven hundred thirty-seven million, eighty-seven thousand, nine hundred four".