23168988 has 18 divisors (see below), whose sum is σ = 58566144. Its totient is φ = 7722984.

The previous prime is 23168963. The next prime is 23168989. The reversal of 23168988 is 88986132.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23168989) 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 5 ways as a sum of consecutive naturals, for example, 321756 + ... + 321827.

Almost surely, 2^23168988 is an apocalyptic number.

It is an amenable number.

23168988 is an abundant number, since it is smaller than the sum of its proper divisors (35397156).

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

23168988 is a wasteful number, since it uses less digits than its factorization.

23168988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643593 (or 643588 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 23168988 is about 4813.4174969558. The cubic root of 23168988 is about 285.0814910089.

The spelling of 23168988 in words is "twenty-three million, one hundred sixty-eight thousand, nine hundred eighty-eight".