22090388 has 12 divisors (see below), whose sum is σ = 40692960. Its totient is φ = 10463832.

The previous prime is 22090379. The next prime is 22090427. The reversal of 22090388 is 88309022.

It is a happy number.

It is a congruent number.

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, 145256 + ... + 145407.

It is an arithmetic number, because the mean of its divisors is an integer number (3391080).

Almost surely, 2^22090388 is an apocalyptic number.

It is an amenable number.

22090388 is a deficient number, since it is larger than the sum of its proper divisors (18602572).

22090388 is a wasteful number, since it uses less digits than its factorization.

22090388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290686 (or 290684 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 22090388 is about 4700.0412764145. The cubic root of 22090388 is about 280.5871522511.

The spelling of 22090388 in words is "twenty-two million, ninety thousand, three hundred eighty-eight".