22152390 has 64 divisors (see below), whose sum is σ = 58060800. Its totient is φ = 5376384.

The previous prime is 22152373. The next prime is 22152401. The reversal of 22152390 is 9325122.

It is a self number, because there is not a number n which added to its sum of digits gives 22152390.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30451 + ... + 31169.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^22152390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22152390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29030400).

22152390 is an abundant number, since it is smaller than the sum of its proper divisors (35908410).

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

22152390 is a wasteful number, since it uses less digits than its factorization.

22152390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 22152390 is about 4706.6325541729. The cubic root of 22152390 is about 280.8494188636.

The spelling of 22152390 in words is "twenty-two million, one hundred fifty-two thousand, three hundred ninety".