20424200 has 24 divisors (see below), whose sum is σ = 47486730. Its totient is φ = 8169600.

The previous prime is 20424199. The next prime is 20424247. The reversal of 20424200 is 242402.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 8631844 + 11792356 = 2938^2 + 3434^2 .

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50861 + ... + 51260.

Almost surely, 2^20424200 is an apocalyptic number.

20424200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20424200 is an abundant number, since it is smaller than the sum of its proper divisors (27062530).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20424200 is a wasteful number, since it uses less digits than its factorization.

20424200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102137 (or 102128 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 20424200 is about 4519.3141072512. The cubic root of 20424200 is about 273.3474445752.

Adding to 20424200 its reverse (242402), we get a palindrome (20666602).

The spelling of 20424200 in words is "twenty million, four hundred twenty-four thousand, two hundred".