204288904 has 8 divisors (see below), whose sum is σ = 383041710. Its totient is φ = 102144448.

The previous prime is 204288901. The next prime is 204288911. The reversal of 204288904 is 409882402.

204288904 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 201696804 + 2592100 = 14202^2 + 1610^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (204288901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12768049 + ... + 12768064.

Almost surely, 2^204288904 is an apocalyptic number.

It is an amenable number.

204288904 is a deficient number, since it is larger than the sum of its proper divisors (178752806).

204288904 is a wasteful number, since it uses less digits than its factorization.

204288904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25536119 (or 25536115 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 204288904 is about 14292.9669418214. The cubic root of 204288904 is about 588.9542944060.

The spelling of 204288904 in words is "two hundred four million, two hundred eighty-eight thousand, nine hundred four".