22991968 has 24 divisors (see below), whose sum is σ = 45450720. Its totient is φ = 11448960.

The previous prime is 22991963. The next prime is 22991981. The reversal of 22991968 is 86919922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22991963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7273 + ... + 9943.

It is an arithmetic number, because the mean of its divisors is an integer number (1893780).

Almost surely, 2^22991968 is an apocalyptic number.

It is an amenable number.

22991968 is a deficient number, since it is larger than the sum of its proper divisors (22458752).

22991968 is a wasteful number, since it uses less digits than its factorization.

22991968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950 (or 2942 counting only the distinct ones).

The product of its digits is 139968, while the sum is 46.

The square root of 22991968 is about 4794.9940563050. The cubic root of 22991968 is about 284.3535898706.

The spelling of 22991968 in words is "twenty-two million, nine hundred ninety-one thousand, nine hundred sixty-eight".