22443242140 has 96 divisors (see below), whose sum is σ = 52428358080. Its totient is φ = 8068628480.

The previous prime is 22443242131. The next prime is 22443242161. The reversal of 22443242140 is 4124234422.

It is a junction number, because it is equal to n+sod(n) for n = 22443242099 and 22443242108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2364444 + ... + 2373916.

It is an arithmetic number, because the mean of its divisors is an integer number (546128730).

Almost surely, 2^22443242140 is an apocalyptic number.

22443242140 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 22443242140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26214179040).

22443242140 is an abundant number, since it is smaller than the sum of its proper divisors (29985115940).

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

22443242140 is a wasteful number, since it uses less digits than its factorization.

22443242140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9604 (or 9580 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 22443242140 its reverse (4124234422), we get a palindrome (26567476562).

The spelling of 22443242140 in words is "twenty-two billion, four hundred forty-three million, two hundred forty-two thousand, one hundred forty".