22297844 has 12 divisors (see below), whose sum is σ = 39116868. Its totient is φ = 11121600.

The previous prime is 22297841. The next prime is 22297859. The reversal of 22297844 is 44879222.

It can be written as a sum of positive squares in 2 ways, for example, as 11142244 + 11155600 = 3338^2 + 3340^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22297798 and 22297807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22297841) 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 3 ways as a sum of consecutive naturals, for example, 4937 + ... + 8304.

It is an arithmetic number, because the mean of its divisors is an integer number (3259739).

Almost surely, 2^22297844 is an apocalyptic number.

It is an amenable number.

22297844 is a deficient number, since it is larger than the sum of its proper divisors (16819024).

22297844 is a wasteful number, since it uses less digits than its factorization.

22297844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13666 (or 13664 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 22297844 is about 4722.0592965358. The cubic root of 22297844 is about 281.4627700901.

The spelling of 22297844 in words is "twenty-two million, two hundred ninety-seven thousand, eight hundred forty-four".