204664872 has 32 divisors (see below), whose sum is σ = 512117280. Its totient is φ = 68160960.

The previous prime is 204664849. The next prime is 204664897. The reversal of 204664872 is 278466402.

It is a self number, because there is not a number n which added to its sum of digits gives 204664872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29847 + ... + 36057.

It is an arithmetic number, because the mean of its divisors is an integer number (16003665).

Almost surely, 2^204664872 is an apocalyptic number.

It is an amenable number.

204664872 is an abundant number, since it is smaller than the sum of its proper divisors (307452408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204664872 is a wasteful number, since it uses less digits than its factorization.

204664872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7593 (or 7589 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 204664872 is about 14306.1130989518. The cubic root of 204664872 is about 589.3153717263.

The spelling of 204664872 in words is "two hundred four million, six hundred sixty-four thousand, eight hundred seventy-two".