204012636 has 24 divisors (see below), whose sum is σ = 476496384. Its totient is φ = 67937520.

The previous prime is 204012629. The next prime is 204012689. The reversal of 204012636 is 636210402.

204012636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5301 + ... + 20883.

It is an arithmetic number, because the mean of its divisors is an integer number (19854016).

Almost surely, 2^204012636 is an apocalyptic number.

It is an amenable number.

204012636 is an abundant number, since it is smaller than the sum of its proper divisors (272483748).

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

204012636 is a wasteful number, since it uses less digits than its factorization.

204012636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16681 (or 16679 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 204012636 is about 14283.2991987146. The cubic root of 204012636 is about 588.6886858764.

The spelling of 204012636 in words is "two hundred four million, twelve thousand, six hundred thirty-six".