204905256 has 32 divisors (see below), whose sum is σ = 512645760. Its totient is φ = 68250752.

The previous prime is 204905237. The next prime is 204905263. The reversal of 204905256 is 652509402.

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 7 ways as a sum of consecutive naturals, for example, 43681 + ... + 48143.

It is an arithmetic number, because the mean of its divisors is an integer number (16020180).

Almost surely, 2^204905256 is an apocalyptic number.

It is an amenable number.

204905256 is an abundant number, since it is smaller than the sum of its proper divisors (307740504).

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

204905256 is a wasteful number, since it uses less digits than its factorization.

204905256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6385 (or 6381 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 204905256 is about 14314.5120769099. The cubic root of 204905256 is about 589.5460033262.

The spelling of 204905256 in words is "two hundred four million, nine hundred five thousand, two hundred fifty-six".