204656404 has 24 divisors (see below), whose sum is σ = 379874880. Its totient is φ = 96141696.

The previous prime is 204656399. The next prime is 204656437. The reversal of 204656404 is 404656402.

It is a super-2 number, since 2×204656404² = 83768487396422432, which contains 22 as substring.

It is a congruent number.

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, 42529 + ... + 47095.

It is an arithmetic number, because the mean of its divisors is an integer number (15828120).

Almost surely, 2^204656404 is an apocalyptic number.

It is an amenable number.

204656404 is a deficient number, since it is larger than the sum of its proper divisors (175218476).

204656404 is a wasteful number, since it uses less digits than its factorization.

204656404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5247 (or 5245 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 204656404 is about 14305.8171384930. The cubic root of 204656404 is about 589.3072439818.

The spelling of 204656404 in words is "two hundred four million, six hundred fifty-six thousand, four hundred four".