204900900 has 36 divisors (see below), whose sum is σ = 592847472. Its totient is φ = 54640160.

The previous prime is 204900889. The next prime is 204900901. The reversal of 204900900 is 9009402.

It is not an unprimeable number, because it can be changed into a prime (204900901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341202 + ... + 341801.

Almost surely, 2^204900900 is an apocalyptic number.

204900900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204900900 is an abundant number, since it is smaller than the sum of its proper divisors (387946572).

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

204900900 is a wasteful number, since it uses less digits than its factorization.

204900900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683020 (or 683013 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 204900900 is about 14314.3599228188. The cubic root of 204900900 is about 589.5418256547.

The spelling of 204900900 in words is "two hundred four million, nine hundred thousand, nine hundred".