22244166 has 64 divisors (see below), whose sum is σ = 57254400. Its totient is φ = 6270048.

The previous prime is 22244149. The next prime is 22244191. The reversal of 22244166 is 66144222.

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

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 31020 + ... + 31728.

It is an arithmetic number, because the mean of its divisors is an integer number (894600).

Almost surely, 2^22244166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22244166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28627200).

22244166 is an abundant number, since it is smaller than the sum of its proper divisors (35010234).

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

22244166 is a wasteful number, since it uses less digits than its factorization.

22244166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 804 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 22244166 is about 4716.3721227231. The cubic root of 22244166 is about 281.2367318185.

Adding to 22244166 its reverse (66144222), we get a palindrome (88388388).

The spelling of 22244166 in words is "twenty-two million, two hundred forty-four thousand, one hundred sixty-six".