22388400528 has 80 divisors (see below), whose sum is σ = 62345801280. Its totient is φ = 6882089472.

The previous prime is 22388400521. The next prime is 22388400533. The reversal of 22388400528 is 82500488322.

It is a self number, because there is not a number n which added to its sum of digits gives 22388400528.

It is not an unprimeable number, because it can be changed into a prime (22388400521) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 650275 + ... + 683837.

It is an arithmetic number, because the mean of its divisors is an integer number (779322516).

Almost surely, 2^22388400528 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 22388400528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31172900640).

22388400528 is an abundant number, since it is smaller than the sum of its proper divisors (39957400752).

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

22388400528 is a wasteful number, since it uses less digits than its factorization.

22388400528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34656 (or 34650 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 42.

The spelling of 22388400528 in words is "twenty-two billion, three hundred eighty-eight million, four hundred thousand, five hundred twenty-eight".