20404124 has 24 divisors (see below), whose sum is σ = 38596320. Its totient is φ = 9382464.

The previous prime is 20404123. The next prime is 20404127. The reversal of 20404124 is 42140402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18122 + ... + 19214.

It is an arithmetic number, because the mean of its divisors is an integer number (1608180).

Almost surely, 2^20404124 is an apocalyptic number.

It is an amenable number.

20404124 is a deficient number, since it is larger than the sum of its proper divisors (18192196).

20404124 is a wasteful number, since it uses less digits than its factorization.

20404124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1467 counting only the distinct ones).

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

The square root of 20404124 is about 4517.0924276574. The cubic root of 20404124 is about 273.2578527783.

Adding to 20404124 its reverse (42140402), we get a palindrome (62544526).

It can be divided in two parts, 204041 and 24, that multiplied together give a palindrome (4896984).

The spelling of 20404124 in words is "twenty million, four hundred four thousand, one hundred twenty-four".