204043404 has 12 divisors (see below), whose sum is σ = 476101304. Its totient is φ = 68014464.

The previous prime is 204043393. The next prime is 204043409. The reversal of 204043404 is 404340402.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (204043409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8501797 + ... + 8501820.

Almost surely, 2^204043404 is an apocalyptic number.

It is an amenable number.

204043404 is an abundant number, since it is smaller than the sum of its proper divisors (272057900).

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

204043404 is a wasteful number, since it uses less digits than its factorization.

204043404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17003624 (or 17003622 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 204043404 is about 14284.3762201925. The cubic root of 204043404 is about 588.7182785908.

Adding to 204043404 its reverse (404340402), we get a palindrome (608383806).

The spelling of 204043404 in words is "two hundred four million, forty-three thousand, four hundred four".