204834636 has 24 divisors (see below), whose sum is σ = 531053040. Its totient is φ = 68278176.

The previous prime is 204834599. The next prime is 204834659. The reversal of 204834636 is 636438402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 204834636.

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, 948201 + ... + 948416.

It is an arithmetic number, because the mean of its divisors is an integer number (22127210).

Almost surely, 2^204834636 is an apocalyptic number.

It is an amenable number.

204834636 is an abundant number, since it is smaller than the sum of its proper divisors (326218404).

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

204834636 is a wasteful number, since it uses less digits than its factorization.

204834636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896630 (or 1896622 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 204834636 is about 14312.0451368768. The cubic root of 204834636 is about 589.4782671060.

The spelling of 204834636 in words is "two hundred four million, eight hundred thirty-four thousand, six hundred thirty-six".