22128198528 has 64 divisors (see below), whose sum is σ = 59605960320. Its totient is φ = 7272168960.

The previous prime is 22128198523. The next prime is 22128198539. The reversal of 22128198528 is 82589182122.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22128198523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378550 + ... + 433077.

It is an arithmetic number, because the mean of its divisors is an integer number (931343130).

Almost surely, 2^22128198528 is an apocalyptic number.

It is an amenable number.

22128198528 is an abundant number, since it is smaller than the sum of its proper divisors (37477761792).

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

22128198528 is an equidigital number, since it uses as much as digits as its factorization.

22128198528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811715 (or 811703 counting only the distinct ones).

The product of its digits is 368640, while the sum is 48.

The spelling of 22128198528 in words is "twenty-two billion, one hundred twenty-eight million, one hundred ninety-eight thousand, five hundred twenty-eight".