22249988 has 24 divisors (see below), whose sum is σ = 41865600. Its totient is φ = 10313568.

The previous prime is 22249979. The next prime is 22250017. The reversal of 22249988 is 88994222.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458 + ... + 6686.

It is an arithmetic number, because the mean of its divisors is an integer number (1744400).

Almost surely, 2^22249988 is an apocalyptic number.

It is an amenable number.

22249988 is a deficient number, since it is larger than the sum of its proper divisors (19615612).

22249988 is a wasteful number, since it uses less digits than its factorization.

22249988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6299 (or 6297 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 22249988 is about 4716.9892940307. The cubic root of 22249988 is about 281.2612658533.

The spelling of 22249988 in words is "twenty-two million, two hundred forty-nine thousand, nine hundred eighty-eight".