22791168 has 66 divisors (see below), whose sum is σ = 65835614. Its totient is φ = 7593984.

The previous prime is 22791163. The next prime is 22791179. The reversal of 22791168 is 86119722.

It can be written as a sum of positive squares in only one way, i.e., 21233664 + 1557504 = 4608^2 + 1248^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22791163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7980 + ... + 10452.

Almost surely, 2^22791168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22791168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32917807).

22791168 is an abundant number, since it is smaller than the sum of its proper divisors (43044446).

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

22791168 is a wasteful number, since it uses less digits than its factorization.

22791168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 2478 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 22791168 is about 4774.0096355160. The cubic root of 22791168 is about 283.5233690132.

The spelling of 22791168 in words is "twenty-two million, seven hundred ninety-one thousand, one hundred sixty-eight".