22449185940 has 48 divisors (see below), whose sum is σ = 65025233280. Its totient is φ = 5780019840.

The previous prime is 22449185939. The next prime is 22449185947. The reversal of 22449185940 is 4958194422.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22449185940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22449185947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6449176 + ... + 6452655.

It is an arithmetic number, because the mean of its divisors is an integer number (1354692360).

Almost surely, 2^22449185940 is an apocalyptic number.

22449185940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22449185940 is an abundant number, since it is smaller than the sum of its proper divisors (42576047340).

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

22449185940 is a wasteful number, since it uses less digits than its factorization.

22449185940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12901872 (or 12901870 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 22449185940 in words is "twenty-two billion, four hundred forty-nine million, one hundred eighty-five thousand, nine hundred forty".