23222320 has 60 divisors (see below), whose sum is σ = 59371200. Its totient is φ = 8440960.

The previous prime is 23222299. The next prime is 23222363. The reversal of 23222320 is 2322232.

It is a super-2 number, since 2×23222320² = 1078552292364800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 23222294 and 23222303.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8481 + ... + 10879.

It is an arithmetic number, because the mean of its divisors is an integer number (989520).

Almost surely, 2^23222320 is an apocalyptic number.

23222320 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 23222320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29685600).

23222320 is an abundant number, since it is smaller than the sum of its proper divisors (36148880).

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

23222320 is a wasteful number, since it uses less digits than its factorization.

23222320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434 (or 2417 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 23222320 is about 4818.9542434018. The cubic root of 23222320 is about 285.3000635698.

Adding to 23222320 its reverse (2322232), we get a palindrome (25544552).

The spelling of 23222320 in words is "twenty-three million, two hundred twenty-two thousand, three hundred twenty".