22243440320 has 28 divisors (see below), whose sum is σ = 52967193024. Its totient is φ = 8897376000.

The previous prime is 22243440313. The next prime is 22243440347. The reversal of 22243440320 is 2304434222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22243440320.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34755056 + ... + 34755695.

Almost surely, 2^22243440320 is an apocalyptic number.

22243440320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22243440320 is an abundant number, since it is smaller than the sum of its proper divisors (30723752704).

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

22243440320 is an equidigital number, since it uses as much as digits as its factorization.

22243440320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69510768 (or 69510758 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 22243440320 its reverse (2304434222), we get a palindrome (24547874542).

The spelling of 22243440320 in words is "twenty-two billion, two hundred forty-three million, four hundred forty thousand, three hundred twenty".