204434660 has 24 divisors (see below), whose sum is σ = 429810360. Its totient is φ = 81679104.

The previous prime is 204434641. The next prime is 204434683. The reversal of 204434660 is 66434402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1827904 + 202606756 = 1352^2 + 14234^2 .

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, 13286 + ... + 24194.

It is an arithmetic number, because the mean of its divisors is an integer number (17908765).

Almost surely, 2^204434660 is an apocalyptic number.

204434660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204434660 is an abundant number, since it is smaller than the sum of its proper divisors (225375700).

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

204434660 is a wasteful number, since it uses less digits than its factorization.

204434660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11855 (or 11853 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 204434660 is about 14298.0649040351. The cubic root of 204434660 is about 589.0943300983.

The spelling of 204434660 in words is "two hundred four million, four hundred thirty-four thousand, six hundred sixty".