204213204 has 48 divisors (see below), whose sum is σ = 570171840. Its totient is φ = 62834400.

The previous prime is 204213199. The next prime is 204213209. The reversal of 204213204 is 402312402.

It is an interprime number because it is at equal distance from previous prime (204213199) and next prime (204213209).

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 (204213209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71322 + ... + 74129.

It is an arithmetic number, because the mean of its divisors is an integer number (11878580).

Almost surely, 2^204213204 is an apocalyptic number.

It is an amenable number.

204213204 is an abundant number, since it is smaller than the sum of its proper divisors (365958636).

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

204213204 is a wasteful number, since it uses less digits than its factorization.

204213204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145477 (or 145469 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 204213204 is about 14290.3185408863. The cubic root of 204213204 is about 588.8815390299.

Adding to 204213204 its reverse (402312402), we get a palindrome (606525606).

The spelling of 204213204 in words is "two hundred four million, two hundred thirteen thousand, two hundred four".