22397269 has 4 divisors (see below), whose sum is σ = 22440780. Its totient is φ = 22353760.

The previous prime is 22397237. The next prime is 22397273. The reversal of 22397269 is 96279322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8334769 + 14062500 = 2887^2 + 3750^2 .

It is a cyclic number.

It is not a de Polignac number, because 22397269 - 2⁵ = 22397237 is a prime.

It is a super-2 number, since 2×22397269² = 1003275317316722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22397069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20974 + ... + 22015.

It is an arithmetic number, because the mean of its divisors is an integer number (5610195).

Almost surely, 2^22397269 is an apocalyptic number.

It is an amenable number.

22397269 is a deficient number, since it is larger than the sum of its proper divisors (43511).

22397269 is an equidigital number, since it uses as much as digits as its factorization.

22397269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43510.

The product of its digits is 81648, while the sum is 40.

The square root of 22397269 is about 4732.5753031516. The cubic root of 22397269 is about 281.8804927617.

The spelling of 22397269 in words is "twenty-two million, three hundred ninety-seven thousand, two hundred sixty-nine".