20939832 has 48 divisors (see below), whose sum is σ = 56946240. Its totient is φ = 6951168.

The previous prime is 20939803. The next prime is 20939833. The reversal of 20939832 is 23893902.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20939833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23833 + ... + 24695.

It is an arithmetic number, because the mean of its divisors is an integer number (1186380).

Almost surely, 2^20939832 is an apocalyptic number.

It is an amenable number.

20939832 is an abundant number, since it is smaller than the sum of its proper divisors (36006408).

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

20939832 is a wasteful number, since it uses less digits than its factorization.

20939832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 20939832 is about 4576.0061188770. The cubic root of 20939832 is about 275.6286751943.

The spelling of 20939832 in words is "twenty million, nine hundred thirty-nine thousand, eight hundred thirty-two".