20422504 has 16 divisors (see below), whose sum is σ = 38387520. Its totient is φ = 10185840.

The previous prime is 20422499. The next prime is 20422513. The reversal of 20422504 is 40522402.

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, 487 + ... + 6409.

It is an arithmetic number, because the mean of its divisors is an integer number (2399220).

Almost surely, 2^20422504 is an apocalyptic number.

It is an amenable number.

20422504 is a deficient number, since it is larger than the sum of its proper divisors (17965016).

20422504 is a wasteful number, since it uses less digits than its factorization.

20422504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6360 (or 6356 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 20422504 is about 4519.1264642628. The cubic root of 20422504 is about 273.3398782226.

Adding to 20422504 its reverse (40522402), we get a palindrome (60944906).

The spelling of 20422504 in words is "twenty million, four hundred twenty-two thousand, five hundred four".