204805964 has 24 divisors (see below), whose sum is σ = 403608576. Its totient is φ = 90090000.

The previous prime is 204805949. The next prime is 204805967. The reversal of 204805964 is 469508402.

It is not an unprimeable number, because it can be changed into a prime (204805967) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 73712 + ... + 76439.

It is an arithmetic number, because the mean of its divisors is an integer number (16817024).

Almost surely, 2^204805964 is an apocalyptic number.

It is an amenable number.

204805964 is a deficient number, since it is larger than the sum of its proper divisors (198802612).

204805964 is a wasteful number, since it uses less digits than its factorization.

204805964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150197 (or 150195 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 204805964 is about 14311.0434280663. The cubic root of 204805964 is about 589.4507614883.

The spelling of 204805964 in words is "two hundred four million, eight hundred five thousand, nine hundred sixty-four".