22390528 has 36 divisors (see below), whose sum is σ = 45070200. Its totient is φ = 11101184.

The previous prime is 22390519. The next prime is 22390553. The reversal of 22390528 is 82509322.

It is a self number, because there is not a number n which added to its sum of digits gives 22390528.

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, 37851 + ... + 38437.

It is an arithmetic number, because the mean of its divisors is an integer number (1251950).

Almost surely, 2^22390528 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 22390528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22535100).

22390528 is an abundant number, since it is smaller than the sum of its proper divisors (22679672).

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

22390528 is an equidigital number, since it uses as much as digits as its factorization.

22390528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 22390528 is about 4731.8630580354. The cubic root of 22390528 is about 281.8522103393.

The spelling of 22390528 in words is "twenty-two million, three hundred ninety thousand, five hundred twenty-eight".