20204404 has 24 divisors (see below), whose sum is σ = 38840256. Its totient is φ = 9120000.

The previous prime is 20204389. The next prime is 20204411. The reversal of 20204404 is 40440202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5124 + ... + 8164.

It is an arithmetic number, because the mean of its divisors is an integer number (1618344).

Almost surely, 2^20204404 is an apocalyptic number.

It is an amenable number.

20204404 is a deficient number, since it is larger than the sum of its proper divisors (18635852).

20204404 is a wasteful number, since it uses less digits than its factorization.

20204404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207 (or 3205 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 20204404 is about 4494.9309227173. The cubic root of 20204404 is about 272.3633588156.

Adding to 20204404 its reverse (40440202), we get a palindrome (60644606).

The spelling of 20204404 in words is "twenty million, two hundred four thousand, four hundred four".