20318204 has 12 divisors (see below), whose sum is σ = 35597184. Its totient is φ = 10147584.

The previous prime is 20318203. The next prime is 20318251. The reversal of 20318204 is 40281302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20318203) 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, 2012 + ... + 6684.

It is an arithmetic number, because the mean of its divisors is an integer number (2966432).

Almost surely, 2^20318204 is an apocalyptic number.

It is an amenable number.

20318204 is a deficient number, since it is larger than the sum of its proper divisors (15278980).

20318204 is a wasteful number, since it uses less digits than its factorization.

20318204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5764 (or 5762 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20318204 is about 4507.5718518954. The cubic root of 20318204 is about 272.8737580879.

Adding to 20318204 its reverse (40281302), we get a palindrome (60599506).

The spelling of 20318204 in words is "twenty million, three hundred eighteen thousand, two hundred four".