204138304 has 28 divisors (see below), whose sum is σ = 405993600. Its totient is φ = 101840768.

The previous prime is 204138281. The next prime is 204138307. The reversal of 204138304 is 403831402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204138307) 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, 27327 + ... + 33985.

Almost surely, 2^204138304 is an apocalyptic number.

It is an amenable number.

204138304 is a deficient number, since it is larger than the sum of its proper divisors (201855296).

204138304 is an equidigital number, since it uses as much as digits as its factorization.

204138304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7150 (or 7140 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 204138304 is about 14287.6976451771. The cubic root of 204138304 is about 588.8095348369.

Adding to 204138304 its reverse (403831402), we get a palindrome (607969706).

The spelling of 204138304 in words is "two hundred four million, one hundred thirty-eight thousand, three hundred four".