22297445 has 8 divisors (see below), whose sum is σ = 26893944. Its totient is φ = 17746624.

The previous prime is 22297441. The next prime is 22297447. The reversal of 22297445 is 54479222.

It can be written as a sum of positive squares in 4 ways, for example, as 5536609 + 16760836 = 2353^2 + 4094^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22297445 - 2² = 22297441 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22297441) 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 7 ways as a sum of consecutive naturals, for example, 10334 + ... + 12303.

It is an arithmetic number, because the mean of its divisors is an integer number (3361743).

Almost surely, 2^22297445 is an apocalyptic number.

It is an amenable number.

22297445 is a deficient number, since it is larger than the sum of its proper divisors (4596499).

22297445 is a wasteful number, since it uses less digits than its factorization.

22297445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22839.

The product of its digits is 40320, while the sum is 35.

The square root of 22297445 is about 4722.0170478303. The cubic root of 22297445 is about 281.4610912385.

The spelling of 22297445 in words is "twenty-two million, two hundred ninety-seven thousand, four hundred forty-five".