204404315 has 4 divisors (see below), whose sum is σ = 245285184. Its totient is φ = 163523448.

The previous prime is 204404303. The next prime is 204404339. The reversal of 204404315 is 513404402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204404315 - 2⁶ = 204404251 is a prime.

It is a super-2 number, since 2×204404315² = 83562247981238450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20440427 + ... + 20440436.

It is an arithmetic number, because the mean of its divisors is an integer number (61321296).

Almost surely, 2^204404315 is an apocalyptic number.

204404315 is a deficient number, since it is larger than the sum of its proper divisors (40880869).

204404315 is an equidigital number, since it uses as much as digits as its factorization.

204404315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40880868.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 204404315 is about 14297.0037070709. The cubic root of 204404315 is about 589.0651814990.

Adding to 204404315 its reverse (513404402), we get a palindrome (717808717).

The spelling of 204404315 in words is "two hundred four million, four hundred four thousand, three hundred fifteen".