204205212 has 30 divisors (see below), whose sum is σ = 533833608. Its totient is φ = 68068296.

The previous prime is 204205193. The next prime is 204205219. The reversal of 204205212 is 212502402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204205219) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 314808 + ... + 315455.

Almost surely, 2^204205212 is an apocalyptic number.

It is an amenable number.

204205212 is an abundant number, since it is smaller than the sum of its proper divisors (329628396).

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

204205212 is a wasteful number, since it uses less digits than its factorization.

204205212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630279 (or 630268 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 204205212 is about 14290.0389082745. The cubic root of 204205212 is about 588.8738568582.

Adding to 204205212 its reverse (212502402), we get a palindrome (416707614).

The spelling of 204205212 in words is "two hundred four million, two hundred five thousand, two hundred twelve".