22268388 has 24 divisors (see below), whose sum is σ = 52736992. Its totient is φ = 7311744.

The previous prime is 22268383. The next prime is 22268443. The reversal of 22268388 is 88386222.

It is a super-2 number, since 2×22268388² = 991762208237088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22268383) 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 7 ways as a sum of consecutive naturals, for example, 13045 + ... + 14652.

Almost surely, 2^22268388 is an apocalyptic number.

It is an amenable number.

22268388 is an abundant number, since it is smaller than the sum of its proper divisors (30468604).

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

22268388 is a wasteful number, since it uses less digits than its factorization.

22268388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27771 (or 27769 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 22268388 is about 4718.9392875942. The cubic root of 22268388 is about 281.3387757283.

The spelling of 22268388 in words is "twenty-two million, two hundred sixty-eight thousand, three hundred eighty-eight".