20204504 has 16 divisors (see below), whose sum is σ = 37966320. Its totient is φ = 10080160.

The previous prime is 20204477. The next prime is 20204519. The reversal of 20204504 is 40540202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1514 + ... + 6534.

It is an arithmetic number, because the mean of its divisors is an integer number (2372895).

Almost surely, 2^20204504 is an apocalyptic number.

It is an amenable number.

20204504 is a deficient number, since it is larger than the sum of its proper divisors (17761816).

20204504 is a wasteful number, since it uses less digits than its factorization.

20204504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530 (or 5526 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 20204504 is about 4494.9420463450. The cubic root of 20204504 is about 272.3638081614.

Adding to 20204504 its reverse (40540202), we get a palindrome (60744706).

The spelling of 20204504 in words is "twenty million, two hundred four thousand, five hundred four".