204817868 has 12 divisors (see below), whose sum is σ = 369993792. Its totient is φ = 99105360.

The previous prime is 204817843. The next prime is 204817871. The reversal of 204817868 is 868718402.

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, 825755 + ... + 826002.

It is an arithmetic number, because the mean of its divisors is an integer number (30832816).

Almost surely, 2^204817868 is an apocalyptic number.

It is an amenable number.

204817868 is a deficient number, since it is larger than the sum of its proper divisors (165175924).

204817868 is a wasteful number, since it uses less digits than its factorization.

204817868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651792 (or 1651790 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The square root of 204817868 is about 14311.4593246112. The cubic root of 204817868 is about 589.4621815430.

The spelling of 204817868 in words is "two hundred four million, eight hundred seventeen thousand, eight hundred sixty-eight".