20932920 has 48 divisors (see below), whose sum is σ = 68033160. Its totient is φ = 5582016.

The previous prime is 20932909. The next prime is 20932937. The reversal of 20932920 is 2923902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28714 + ... + 29433.

Almost surely, 2^20932920 is an apocalyptic number.

20932920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20932920 is an abundant number, since it is smaller than the sum of its proper divisors (47100240).

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

20932920 is a wasteful number, since it uses less digits than its factorization.

20932920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58164 (or 58157 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 20932920 is about 4575.2508127970. The cubic root of 20932920 is about 275.5983445616.

The spelling of 20932920 in words is "twenty million, nine hundred thirty-two thousand, nine hundred twenty".