204122904 has 32 divisors (see below), whose sum is σ = 511038720. Its totient is φ = 67943456.

The previous prime is 204122881. The next prime is 204122911. The reversal of 204122904 is 409221402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12109 + ... + 23555.

It is an arithmetic number, because the mean of its divisors is an integer number (15969960).

Almost surely, 2^204122904 is an apocalyptic number.

204122904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

204122904 is an abundant number, since it is smaller than the sum of its proper divisors (306915816).

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

204122904 is a wasteful number, since it uses less digits than its factorization.

204122904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12199 (or 12195 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 204122904 is about 14287.1587098345. The cubic root of 204122904 is about 588.7947280537.

The spelling of 204122904 in words is "two hundred four million, one hundred twenty-two thousand, nine hundred four".