28861638024 has 64 divisors (see below), whose sum is σ = 74551155840. Its totient is φ = 9306053120.

The previous prime is 28861638017. The next prime is 28861638041. The reversal of 28861638024 is 42083616882.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69477 + ... + 250100.

It is an arithmetic number, because the mean of its divisors is an integer number (1164861810).

Almost surely, 2^28861638024 is an apocalyptic number.

28861638024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28861638024 is an abundant number, since it is smaller than the sum of its proper divisors (45689517816).

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

28861638024 is a wasteful number, since it uses less digits than its factorization.

28861638024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319710 (or 319706 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 48.

The spelling of 28861638024 in words is "twenty-eight billion, eight hundred sixty-one million, six hundred thirty-eight thousand, twenty-four".