22432218 has 16 divisors (see below), whose sum is σ = 45125856. Its totient is φ = 7433840.

The previous prime is 22432187. The next prime is 22432219. The reversal of 22432218 is 81223422.

It is not an unprimeable number, because it can be changed into a prime (22432219) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9768 + ... + 11843.

It is an arithmetic number, because the mean of its divisors is an integer number (2820366).

Almost surely, 2^22432218 is an apocalyptic number.

22432218 is an abundant number, since it is smaller than the sum of its proper divisors (22693638).

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

22432218 is a wasteful number, since it uses less digits than its factorization.

22432218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21789.

The product of its digits is 1536, while the sum is 24.

The square root of 22432218 is about 4736.2662509618. The cubic root of 22432218 is about 282.0270332718.

The spelling of 22432218 in words is "twenty-two million, four hundred thirty-two thousand, two hundred eighteen".