204504315 has 16 divisors (see below), whose sum is σ = 344428800. Its totient is φ = 103328352.

The previous prime is 204504257. The next prime is 204504319. The reversal of 204504315 is 513405402.

It is not a de Polignac number, because 204504315 - 2¹⁰ = 204503291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204504319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358495 + ... + 359064.

It is an arithmetic number, because the mean of its divisors is an integer number (21526800).

Almost surely, 2^204504315 is an apocalyptic number.

204504315 is a deficient number, since it is larger than the sum of its proper divisors (139924485).

204504315 is a wasteful number, since it uses less digits than its factorization.

204504315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717586.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 204504315 is about 14300.5005157162. The cubic root of 204504315 is about 589.1612279295.

Adding to 204504315 its reverse (513405402), we get a palindrome (717909717).

The spelling of 204504315 in words is "two hundred four million, five hundred four thousand, three hundred fifteen".