204204 has 96 divisors (see below), whose sum is σ = 677376. Its totient is φ = 46080.

The previous prime is 204173. The next prime is 204233. The reversal of 204204 is 402402.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 204204.

It is a congruent number.

It is an unprimeable number.

204204 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12004 + ... + 12020.

It is an arithmetic number, because the mean of its divisors is an integer number (7056).

2²⁰⁴²⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338688).

204204 is an abundant number, since it is smaller than the sum of its proper divisors (473172).

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

204204 is a wasteful number, since it uses less digits than its factorization.

204204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 204204 is about 451.8893669915. The cubic root of 204204 is about 58.8872691827.

Adding to 204204 its reverse (402402), we get a palindrome (606606).

It can be divided in two parts, 20 and 4204, that added together give a palindrome (4224).

The spelling of 204204 in words is "two hundred four thousand, two hundred four", and thus it is an iban number.