22239224 has 64 divisors (see below), whose sum is σ = 49766400. Its totient is φ = 9120384.

The previous prime is 22239209. The next prime is 22239227. The reversal of 22239224 is 42293222.

It is a junction number, because it is equal to n+sod(n) for n = 22239193 and 22239202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22239227) 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, 175049 + ... + 175175.

It is an arithmetic number, because the mean of its divisors is an integer number (777600).

Almost surely, 2^22239224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22239224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24883200).

22239224 is an abundant number, since it is smaller than the sum of its proper divisors (27527176).

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

22239224 is a wasteful number, since it uses less digits than its factorization.

22239224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 248 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 22239224 is about 4715.8481739768. The cubic root of 22239224 is about 281.2159027635.

The spelling of 22239224 in words is "twenty-two million, two hundred thirty-nine thousand, two hundred twenty-four".