205004404 has 24 divisors (see below), whose sum is σ = 393573600. Its totient is φ = 92659680.

The previous prime is 205004399. The next prime is 205004413. The reversal of 205004404 is 404400502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5139 + ... + 20890.

It is an arithmetic number, because the mean of its divisors is an integer number (16398900).

Almost surely, 2^205004404 is an apocalyptic number.

It is an amenable number.

205004404 is a deficient number, since it is larger than the sum of its proper divisors (188569196).

205004404 is a wasteful number, since it uses less digits than its factorization.

205004404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26223 (or 26221 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 205004404 is about 14317.9748568015. The cubic root of 205004404 is about 589.6410763419.

Adding to 205004404 its reverse (404400502), we get a palindrome (609404906).

The spelling of 205004404 in words is "two hundred five million, four thousand, four hundred four".