22908189312 has 112 divisors (see below), whose sum is σ = 68425089930. Its totient is φ = 7636032000.

The previous prime is 22908189281. The next prime is 22908189329. The reversal of 22908189312 is 21398180922.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22796168256 + 112021056 = 150984^2 + 10584^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 29439 + ... + 216062.

Almost surely, 2^22908189312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22908189312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34212544965).

22908189312 is an abundant number, since it is smaller than the sum of its proper divisors (45516900618).

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

22908189312 is an frugal number, since it uses more digits than its factorization.

22908189312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245533 (or 245506 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 22908189312 in words is "twenty-two billion, nine hundred eight million, one hundred eighty-nine thousand, three hundred twelve".