22424218 has 16 divisors (see below), whose sum is σ = 36947520. Its totient is φ = 10159776.

The previous prime is 22424209. The next prime is 22424219. The reversal of 22424218 is 81242422.

It is a junction number, because it is equal to n+sod(n) for n = 22424192 and 22424201.

It is not an unprimeable number, because it can be changed into a prime (22424219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11955 + ... + 13702.

It is an arithmetic number, because the mean of its divisors is an integer number (2309220).

Almost surely, 2^22424218 is an apocalyptic number.

22424218 is a deficient number, since it is larger than the sum of its proper divisors (14523302).

22424218 is a wasteful number, since it uses less digits than its factorization.

22424218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25701.

The product of its digits is 2048, while the sum is 25.

The square root of 22424218 is about 4735.4216285353. The cubic root of 22424218 is about 281.9935028599.

It can be divided in two parts, 224 and 24218, that added together give a palindrome (24442).

The spelling of 22424218 in words is "twenty-two million, four hundred twenty-four thousand, two hundred eighteen".