20322404 has 12 divisors (see below), whose sum is σ = 35630700. Its totient is φ = 10142208.

The previous prime is 20322383. The next prime is 20322427. The reversal of 20322404 is 40422302.

It can be written as a sum of positive squares in 2 ways, for example, as 1849600 + 18472804 = 1360^2 + 4298^2 .

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, 2189 + ... + 6740.

It is an arithmetic number, because the mean of its divisors is an integer number (2969225).

Almost surely, 2^20322404 is an apocalyptic number.

It is an amenable number.

20322404 is a deficient number, since it is larger than the sum of its proper divisors (15308296).

20322404 is a wasteful number, since it uses less digits than its factorization.

20322404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9502 (or 9500 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20322404 is about 4508.0377105787. The cubic root of 20322404 is about 272.8925588117.

Adding to 20322404 its reverse (40422302), we get a palindrome (60744706).

The spelling of 20322404 in words is "twenty million, three hundred twenty-two thousand, four hundred four".