204105404 has 24 divisors (see below), whose sum is σ = 377975808. Its totient is φ = 96237680.

The previous prime is 204105401. The next prime is 204105449. The reversal of 204105404 is 404501402.

204105404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204105401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9092 + ... + 22155.

It is an arithmetic number, because the mean of its divisors is an integer number (15748992).

Almost surely, 2^204105404 is an apocalyptic number.

It is an amenable number.

204105404 is a deficient number, since it is larger than the sum of its proper divisors (173870404).

204105404 is a wasteful number, since it uses less digits than its factorization.

204105404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31345 (or 31343 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 204105404 is about 14286.5462586309. The cubic root of 204105404 is about 588.7779012596. Note that the first 3 decimals are identical.

Adding to 204105404 its reverse (404501402), we get a palindrome (608606806).

The spelling of 204105404 in words is "two hundred four million, one hundred five thousand, four hundred four".