204509204 has 12 divisors (see below), whose sum is σ = 366214464. Its totient is φ = 99876504.

The previous prime is 204509203. The next prime is 204509219. The reversal of 204509204 is 402905402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204509203) 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, 594332 + ... + 594675.

It is an arithmetic number, because the mean of its divisors is an integer number (30517872).

Almost surely, 2^204509204 is an apocalyptic number.

It is an amenable number.

204509204 is a deficient number, since it is larger than the sum of its proper divisors (161705260).

204509204 is a wasteful number, since it uses less digits than its factorization.

204509204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189054 (or 1189052 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 204509204 is about 14300.6714527675. The cubic root of 204509204 is about 589.1659228366.

The spelling of 204509204 in words is "two hundred four million, five hundred nine thousand, two hundred four".