22044419920 has 160 divisors (see below), whose sum is σ = 55569014784. Its totient is φ = 8108812800.

The previous prime is 22044419909. The next prime is 22044419953. The reversal of 22044419920 is 2991444022.

It is a self number, because there is not a number n which added to its sum of digits gives 22044419920.

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, 9296335 + ... + 9298705.

Almost surely, 2^22044419920 is an apocalyptic number.

22044419920 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 22044419920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27784507392).

22044419920 is an abundant number, since it is smaller than the sum of its proper divisors (33524594864).

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

22044419920 is a wasteful number, since it uses less digits than its factorization.

22044419920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601 (or 2595 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 22044419920 in words is "twenty-two billion, forty-four million, four hundred nineteen thousand, nine hundred twenty".