22400120 has 32 divisors (see below), whose sum is σ = 50619600. Its totient is φ = 8921088.

The previous prime is 22400111. The next prime is 22400149. The reversal of 22400120 is 2100422.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 9191 + ... + 11369.

Almost surely, 2^22400120 is an apocalyptic number.

22400120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22400120 is an abundant number, since it is smaller than the sum of its proper divisors (28219480).

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

22400120 is a wasteful number, since it uses less digits than its factorization.

22400120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447 (or 2443 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 22400120 is about 4732.8765037765. The cubic root of 22400120 is about 281.8924526602.

Adding to 22400120 its reverse (2100422), we get a palindrome (24500542).

The spelling of 22400120 in words is "twenty-two million, four hundred thousand, one hundred twenty".