22040344432 has 80 divisors (see below), whose sum is σ = 45505480320. Its totient is φ = 10311840000.

The previous prime is 22040344429. The next prime is 22040344441. The reversal of 22040344432 is 23444304022.

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 22040344432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20970307 + ... + 20971357.

It is an arithmetic number, because the mean of its divisors is an integer number (568818504).

Almost surely, 2^22040344432 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 22040344432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22752740160).

22040344432 is an abundant number, since it is smaller than the sum of its proper divisors (23465135888).

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

22040344432 is a wasteful number, since it uses less digits than its factorization.

22040344432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862 (or 1856 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 22040344432 its reverse (23444304022), we get a palindrome (45484648454).

The spelling of 22040344432 in words is "twenty-two billion, forty million, three hundred forty-four thousand, four hundred thirty-two".