204321164 has 12 divisors (see below), whose sum is σ = 378595224. Its totient is φ = 96151104.

The previous prime is 204321157. The next prime is 204321179. The reversal of 204321164 is 461123402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1502294 + ... + 1502429.

It is an arithmetic number, because the mean of its divisors is an integer number (31549602).

Almost surely, 2^204321164 is an apocalyptic number.

It is an amenable number.

204321164 is a deficient number, since it is larger than the sum of its proper divisors (174274060).

204321164 is a wasteful number, since it uses less digits than its factorization.

204321164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004744 (or 3004742 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 204321164 is about 14294.0954243352. The cubic root of 204321164 is about 588.9852940755.

Adding to 204321164 its reverse (461123402), we get a palindrome (665444566).

The spelling of 204321164 in words is "two hundred four million, three hundred twenty-one thousand, one hundred sixty-four".