22163166 has 32 divisors (see below), whose sum is σ = 49474080. Its totient is φ = 7354368.

The previous prime is 22163161. The next prime is 22163201. The reversal of 22163166 is 66136122.

22163166 is a `hidden beast` number, since 2 + 21 + 631 + 6 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22163161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13080 + ... + 14676.

It is an arithmetic number, because the mean of its divisors is an integer number (1546065).

Almost surely, 2^22163166 is an apocalyptic number.

22163166 is an abundant number, since it is smaller than the sum of its proper divisors (27310914).

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

22163166 is a wasteful number, since it uses less digits than its factorization.

22163166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865 (or 1859 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 22163166 is about 4707.7771824928. Note that the first 3 decimals coincide. The cubic root of 22163166 is about 280.8949510873.

Adding to 22163166 its reverse (66136122), we get a palindrome (88299288).

The spelling of 22163166 in words is "twenty-two million, one hundred sixty-three thousand, one hundred sixty-six".