20902832 has 20 divisors (see below), whose sum is σ = 40570320. Its totient is φ = 10433088.

The previous prime is 20902813. The next prime is 20902873. The reversal of 20902832 is 23820902.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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, 16394 + ... + 17622.

It is an arithmetic number, because the mean of its divisors is an integer number (2028516).

Almost surely, 2^20902832 is an apocalyptic number.

It is an amenable number.

20902832 is a deficient number, since it is larger than the sum of its proper divisors (19667488).

20902832 is a wasteful number, since it uses less digits than its factorization.

20902832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300 (or 2294 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 20902832 is about 4571.9615046498. The cubic root of 20902832 is about 275.4662371902.

The spelling of 20902832 in words is "twenty million, nine hundred two thousand, eight hundred thirty-two".