22231590 has 16 divisors (see below), whose sum is σ = 53355888. Its totient is φ = 5928416.

The previous prime is 22231589. The next prime is 22231607. The reversal of 22231590 is 9513222.

It is a self number, because there is not a number n which added to its sum of digits gives 22231590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370497 + ... + 370556.

It is an arithmetic number, because the mean of its divisors is an integer number (3334743).

Almost surely, 2^22231590 is an apocalyptic number.

22231590 is an abundant number, since it is smaller than the sum of its proper divisors (31124298).

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

22231590 is a wasteful number, since it uses less digits than its factorization.

22231590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741063.

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

The square root of 22231590 is about 4715.0387060978. The cubic root of 22231590 is about 281.1837216663.

The spelling of 22231590 in words is "twenty-two million, two hundred thirty-one thousand, five hundred ninety".