20330404 has 6 divisors (see below), whose sum is σ = 35578214. Its totient is φ = 10165200.

The previous prime is 20330371. The next prime is 20330407. The reversal of 20330404 is 40403302.

It can be written as a sum of positive squares in only one way, i.e., 13307904 + 7022500 = 3648^2 + 2650^2 .

It is not an unprimeable number, because it can be changed into a prime (20330407) by changing a digit.

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 as a sum of consecutive naturals, namely, 2541297 + ... + 2541304.

Almost surely, 2^20330404 is an apocalyptic number.

It is an amenable number.

20330404 is a deficient number, since it is larger than the sum of its proper divisors (15247810).

20330404 is a wasteful number, since it uses less digits than its factorization.

20330404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5082605 (or 5082603 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20330404 is about 4508.9249272970. The cubic root of 20330404 is about 272.9283625494.

Adding to 20330404 its reverse (40403302), we get a palindrome (60733706).

The spelling of 20330404 in words is "twenty million, three hundred thirty thousand, four hundred four".