204638992 has 20 divisors (see below), whose sum is σ = 396835216. Its totient is φ = 102229920.

The previous prime is 204638953. The next prime is 204638999. The reversal of 204638992 is 299836402.

It is not an unprimeable number, because it can be changed into a prime (204638999) 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, 15703 + ... + 25609.

Almost surely, 2^204638992 is an apocalyptic number.

It is an amenable number.

204638992 is a deficient number, since it is larger than the sum of its proper divisors (192196224).

204638992 is a wasteful number, since it uses less digits than its factorization.

204638992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11206 (or 11200 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 204638992 is about 14305.2085619190. The cubic root of 204638992 is about 589.2905309145.

The spelling of 204638992 in words is "two hundred four million, six hundred thirty-eight thousand, nine hundred ninety-two".