20839204 has 12 divisors (see below), whose sum is σ = 36642928. Its totient is φ = 10369800.

The previous prime is 20839201. The next prime is 20839243. The reversal of 20839204 is 40293802.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20839201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11502 + ... + 13189.

Almost surely, 2^20839204 is an apocalyptic number.

It is an amenable number.

20839204 is a deficient number, since it is larger than the sum of its proper divisors (15803724).

20839204 is a wasteful number, since it uses less digits than its factorization.

20839204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24906 (or 24904 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20839204 is about 4564.9976998899. The cubic root of 20839204 is about 275.1864476662.

The spelling of 20839204 in words is "twenty million, eight hundred thirty-nine thousand, two hundred four".