204634885 has 32 divisors (see below), whose sum is σ = 306109440. Its totient is φ = 127865088.

The previous prime is 204634877. The next prime is 204634889. The reversal of 204634885 is 588436402.

It is not a de Polignac number, because 204634885 - 2³ = 204634877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204634889) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 33099 + ... + 38791.

It is an arithmetic number, because the mean of its divisors is an integer number (9565920).

Almost surely, 2^204634885 is an apocalyptic number.

It is an amenable number.

204634885 is a deficient number, since it is larger than the sum of its proper divisors (101474555).

204634885 is a wasteful number, since it uses less digits than its factorization.

204634885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5797.

The product of its (nonzero) digits is 184320, while the sum is 40.

The square root of 204634885 is about 14305.0650120858. The cubic root of 204634885 is about 589.2865886348.

The spelling of 204634885 in words is "two hundred four million, six hundred thirty-four thousand, eight hundred eighty-five".