28621036508 has 12 divisors (see below), whose sum is σ = 50090684280. Its totient is φ = 14309412432.

The previous prime is 28621036487. The next prime is 28621036513. The reversal of 28621036508 is 80563012682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216791 + ... + 322862.

It is an arithmetic number, because the mean of its divisors is an integer number (4174223690).

Almost surely, 2^28621036508 is an apocalyptic number.

It is an amenable number.

28621036508 is a deficient number, since it is larger than the sum of its proper divisors (21469647772).

28621036508 is a wasteful number, since it uses less digits than its factorization.

28621036508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552916 (or 552914 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 28621036508 in words is "twenty-eight billion, six hundred twenty-one million, thirty-six thousand, five hundred eight".