22668928 has 16 divisors (see below), whose sum is σ = 45161010. Its totient is φ = 11334400.

The previous prime is 22668917. The next prime is 22668929. The reversal of 22668928 is 82986622.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21603904 + 1065024 = 4648^2 + 1032^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (22668929) by changing a digit.

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, 88423 + ... + 88678.

Almost surely, 2^22668928 is an apocalyptic number.

It is an amenable number.

22668928 is a deficient number, since it is larger than the sum of its proper divisors (22492082).

22668928 is an equidigital number, since it uses as much as digits as its factorization.

22668928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177115 (or 177103 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 22668928 is about 4761.1897672746. The cubic root of 22668928 is about 283.0155693216.

The spelling of 22668928 in words is "twenty-two million, six hundred sixty-eight thousand, nine hundred twenty-eight".