22403553920 has 128 divisors (see below), whose sum is σ = 59671468800. Its totient is φ = 7973294080.

The previous prime is 22403553827. The next prime is 22403553929. The reversal of 22403553920 is 2935530422.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (22403553929) 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, 297026 + ... + 364734.

It is an arithmetic number, because the mean of its divisors is an integer number (466183350).

Almost surely, 2^22403553920 is an apocalyptic number.

22403553920 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 22403553920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29835734400).

22403553920 is an abundant number, since it is smaller than the sum of its proper divisors (37267914880).

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

22403553920 is a wasteful number, since it uses less digits than its factorization.

22403553920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67786 (or 67774 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 22403553920 in words is "twenty-two billion, four hundred three million, five hundred fifty-three thousand, nine hundred twenty".