22400432 has 20 divisors (see below), whose sum is σ = 44460696. Its totient is φ = 10926720.

The previous prime is 22400431. The next prime is 22400447. The reversal of 22400432 is 23400422.

It is a self number, because there is not a number n which added to its sum of digits gives 22400432.

It is not an unprimeable number, because it can be changed into a prime (22400431) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 16418 + ... + 17729.

Almost surely, 2^22400432 is an apocalyptic number.

It is an amenable number.

22400432 is a deficient number, since it is larger than the sum of its proper divisors (22060264).

22400432 is a wasteful number, since it uses less digits than its factorization.

22400432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34196 (or 34190 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 22400432 is about 4732.9094645894. The cubic root of 22400432 is about 281.8937614335.

Adding to 22400432 its reverse (23400422), we get a palindrome (45800854).

The spelling of 22400432 in words is "twenty-two million, four hundred thousand, four hundred thirty-two".