22638244 has 12 divisors (see below), whose sum is σ = 39721500. Its totient is φ = 11289248.

The previous prime is 22638229. The next prime is 22638257. The reversal of 22638244 is 44283622.

It can be written as a sum of positive squares in 2 ways, for example, as 12334144 + 10304100 = 3512^2 + 3210^2 .

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 3 ways as a sum of consecutive naturals, for example, 5719 + ... + 8830.

It is an arithmetic number, because the mean of its divisors is an integer number (3310125).

Almost surely, 2^22638244 is an apocalyptic number.

It is an amenable number.

22638244 is a deficient number, since it is larger than the sum of its proper divisors (17083256).

22638244 is a wasteful number, since it uses less digits than its factorization.

22638244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14942 (or 14940 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 22638244 is about 4757.9663723066. The cubic root of 22638244 is about 282.8878177897.

The spelling of 22638244 in words is "twenty-two million, six hundred thirty-eight thousand, two hundred forty-four".