22489811528 has 36 divisors (see below), whose sum is σ = 43369149915. Its totient is φ = 10933354368.

The previous prime is 22489811527. The next prime is 22489811537. The reversal of 22489811528 is 82511898422.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 22470609604 + 19201924 = 149902^2 + 4382^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106042.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22489811527) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15693500 + ... + 15694932.

Almost surely, 2^22489811528 is an apocalyptic number.

It is an amenable number.

22489811528 is a deficient number, since it is larger than the sum of its proper divisors (20879338387).

22489811528 is an frugal number, since it uses more digits than its factorization.

22489811528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946 (or 1472 counting only the distinct ones).

The product of its digits is 737280, while the sum is 50.

Multiplying 22489811528 by its sum of digits (50), we get a square (1124490576400 = 1060420²).

The spelling of 22489811528 in words is "twenty-two billion, four hundred eighty-nine million, eight hundred eleven thousand, five hundred twenty-eight".