22297992 has 16 divisors (see below), whose sum is σ = 55745040. Its totient is φ = 7432656.

The previous prime is 22297981. The next prime is 22297997. The reversal of 22297992 is 29979222.

It is not an unprimeable number, because it can be changed into a prime (22297997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464518 + ... + 464565.

It is an arithmetic number, because the mean of its divisors is an integer number (3484065).

Almost surely, 2^22297992 is an apocalyptic number.

It is an amenable number.

22297992 is an abundant number, since it is smaller than the sum of its proper divisors (33447048).

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

22297992 is a wasteful number, since it uses less digits than its factorization.

22297992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929092 (or 929088 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 22297992 is about 4722.0749676387. The cubic root of 22297992 is about 281.4633928169.

The spelling of 22297992 in words is "twenty-two million, two hundred ninety-seven thousand, nine hundred ninety-two".