22112320 has 56 divisors (see below), whose sum is σ = 53913024. Its totient is φ = 8633856.

The previous prime is 22112309. The next prime is 22112323. The reversal of 22112320 is 2321122.

It is a self number, because there is not a number n which added to its sum of digits gives 22112320.

It is not an unprimeable number, because it can be changed into a prime (22112323) 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, 12957 + ... + 14563.

Almost surely, 2^22112320 is an apocalyptic number.

22112320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22112320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26956512).

22112320 is an abundant number, since it is smaller than the sum of its proper divisors (31800704).

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

22112320 is a wasteful number, since it uses less digits than its factorization.

22112320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22112320 is about 4702.3738685902. The cubic root of 22112320 is about 280.6799799850.

Adding to 22112320 its reverse (2321122), we get a palindrome (24433442).

The spelling of 22112320 in words is "twenty-two million, one hundred twelve thousand, three hundred twenty".