22297390 has 32 divisors (see below), whose sum is σ = 41094144. Its totient is φ = 8709120.

The previous prime is 22297381. The next prime is 22297397. The reversal of 22297390 is 9379222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22297397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123100 + ... + 123280.

It is an arithmetic number, because the mean of its divisors is an integer number (1284192).

Almost surely, 2^22297390 is an apocalyptic number.

22297390 is a deficient number, since it is larger than the sum of its proper divisors (18796754).

22297390 is a wasteful number, since it uses less digits than its factorization.

22297390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 22297390 is about 4722.0112240443. The cubic root of 22297390 is about 281.4608598163.

The spelling of 22297390 in words is "twenty-two million, two hundred ninety-seven thousand, three hundred ninety".