22242188 has 24 divisors (see below), whose sum is σ = 42638400. Its totient is φ = 10105088.

The previous prime is 22242167. The next prime is 22242193. The reversal of 22242188 is 88124222.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 22242188.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3668 + ... + 7611.

It is an arithmetic number, because the mean of its divisors is an integer number (1776600).

Almost surely, 2^22242188 is an apocalyptic number.

It is an amenable number.

22242188 is a deficient number, since it is larger than the sum of its proper divisors (20396212).

22242188 is a wasteful number, since it uses less digits than its factorization.

22242188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11329 (or 11327 counting only the distinct ones).

The product of its digits is 4096, while the sum is 29.

The square root of 22242188 is about 4716.1624229876. The cubic root of 22242188 is about 281.2283955092.

The spelling of 22242188 in words is "twenty-two million, two hundred forty-two thousand, one hundred eighty-eight".