22144312528 has 20 divisors (see below), whose sum is σ = 46204960228. Its totient is φ = 10220451840.

The previous prime is 22144312499. The next prime is 22144312573. The reversal of 22144312528 is 82521344122.

It can be written as a sum of positive squares in 2 ways, for example, as 3037332544 + 19106979984 = 55112^2 + 138228^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22144312493 and 22144312502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53231313 + ... + 53231728.

Almost surely, 2^22144312528 is an apocalyptic number.

It is an amenable number.

22144312528 is an abundant number, since it is smaller than the sum of its proper divisors (24060647700).

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

22144312528 is a wasteful number, since it uses less digits than its factorization.

22144312528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106463062 (or 106463056 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The spelling of 22144312528 in words is "twenty-two billion, one hundred forty-four million, three hundred twelve thousand, five hundred twenty-eight".