22188968 has 8 divisors (see below), whose sum is σ = 41604330. Its totient is φ = 11094480.

The previous prime is 22188953. The next prime is 22189001. The reversal of 22188968 is 86988122.

It can be written as a sum of positive squares in only one way, i.e., 13557124 + 8631844 = 3682^2 + 2938^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1386803 + ... + 1386818.

Almost surely, 2^22188968 is an apocalyptic number.

It is an amenable number.

22188968 is a deficient number, since it is larger than the sum of its proper divisors (19415362).

22188968 is a wasteful number, since it uses less digits than its factorization.

22188968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773627 (or 2773623 counting only the distinct ones).

The product of its digits is 110592, while the sum is 44.

The square root of 22188968 is about 4710.5167444772. The cubic root of 22188968 is about 281.0039132698.

The spelling of 22188968 in words is "twenty-two million, one hundred eighty-eight thousand, nine hundred sixty-eight".