20412404 has 24 divisors (see below), whose sum is σ = 37233000. Its totient is φ = 9779840.

The previous prime is 20412397. The next prime is 20412409. The reversal of 20412404 is 40421402.

It can be written as a sum of positive squares in 4 ways, for example, as 3602404 + 16810000 = 1898^2 + 4100^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16694 + ... + 17874.

It is an arithmetic number, because the mean of its divisors is an integer number (1551375).

Almost surely, 2^20412404 is an apocalyptic number.

It is an amenable number.

20412404 is a deficient number, since it is larger than the sum of its proper divisors (16820596).

20412404 is a wasteful number, since it uses less digits than its factorization.

20412404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363 (or 1361 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 20412404 is about 4518.0088534663. The cubic root of 20412404 is about 273.2948104874.

Adding to 20412404 its reverse (40421402), we get a palindrome (60833806).

The spelling of 20412404 in words is "twenty million, four hundred twelve thousand, four hundred four".