204331564 has 24 divisors (see below), whose sum is σ = 370772640. Its totient is φ = 98413056.

The previous prime is 204331559. The next prime is 204331583. The reversal of 204331564 is 465133402.

204331564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 54684 + ... + 58300.

It is an arithmetic number, because the mean of its divisors is an integer number (15448860).

Almost surely, 2^204331564 is an apocalyptic number.

It is an amenable number.

204331564 is a deficient number, since it is larger than the sum of its proper divisors (166441076).

204331564 is a wasteful number, since it uses less digits than its factorization.

204331564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137 (or 4135 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 204331564 is about 14294.4592062799. The cubic root of 204331564 is about 588.9952870738.

Adding to 204331564 its reverse (465133402), we get a palindrome (669464966).

The spelling of 204331564 in words is "two hundred four million, three hundred thirty-one thousand, five hundred sixty-four".