20928812960 has 48 divisors (see below), whose sum is σ = 53939263392. Its totient is φ = 7610476800.

The previous prime is 20928812951. The next prime is 20928813001. The reversal of 20928812960 is 6921882902.

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, 5943926 + ... + 5947445.

It is an arithmetic number, because the mean of its divisors is an integer number (1123734654).

Almost surely, 2^20928812960 is an apocalyptic number.

20928812960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20928812960 is an abundant number, since it is smaller than the sum of its proper divisors (33010450432).

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

20928812960 is a wasteful number, since it uses less digits than its factorization.

20928812960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11891397 (or 11891389 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 20928812960 in words is "twenty billion, nine hundred twenty-eight million, eight hundred twelve thousand, nine hundred sixty".