204992604 has 18 divisors (see below), whose sum is σ = 518175840. Its totient is φ = 68330856.

The previous prime is 204992573. The next prime is 204992639. The reversal of 204992604 is 406299402.

204992604 is a `hidden beast` number, since 2 + 0 + 49 + 9 + 2 + 604 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5694239 = 204992604 / (2 + 0 + 4 + 9 + 9 + 2 + 6 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2847084 + ... + 2847155.

Almost surely, 2^204992604 is an apocalyptic number.

It is an amenable number.

204992604 is an abundant number, since it is smaller than the sum of its proper divisors (313183236).

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

204992604 is a wasteful number, since it uses less digits than its factorization.

204992604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5694249 (or 5694244 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 204992604 is about 14317.5627814234. The cubic root of 204992604 is about 589.6297629294.

The spelling of 204992604 in words is "two hundred four million, nine hundred ninety-two thousand, six hundred four".