20692928928 has 72 divisors (see below), whose sum is σ = 63187350912. Its totient is φ = 5912264064.

The previous prime is 20692928909. The next prime is 20692928999. The reversal of 20692928928 is 82982929602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2194800 + ... + 2204207.

It is an arithmetic number, because the mean of its divisors is an integer number (877602096).

Almost surely, 2^20692928928 is an apocalyptic number.

20692928928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20692928928 is an abundant number, since it is smaller than the sum of its proper divisors (42494421984).

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

20692928928 is a wasteful number, since it uses less digits than its factorization.

20692928928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399034 (or 4399019 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 57.

The spelling of 20692928928 in words is "twenty billion, six hundred ninety-two million, nine hundred twenty-eight thousand, nine hundred twenty-eight".