22243697 has 12 divisors (see below), whose sum is σ = 26576820. Its totient is φ = 18549216.

The previous prime is 22243693. The next prime is 22243717. The reversal of 22243697 is 79634222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20511841 + 1731856 = 4529^2 + 1316^2 .

It is not a de Polignac number, because 22243697 - 2² = 22243693 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22243693) 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 11 ways as a sum of consecutive naturals, for example, 4322 + ... + 7947.

It is an arithmetic number, because the mean of its divisors is an integer number (2214735).

Almost surely, 2^22243697 is an apocalyptic number.

It is an amenable number.

22243697 is a deficient number, since it is larger than the sum of its proper divisors (4333123).

22243697 is a wasteful number, since it uses less digits than its factorization.

22243697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12320 (or 12313 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 22243697 is about 4716.3224020417. The cubic root of 22243697 is about 281.2347552560.

The spelling of 22243697 in words is "twenty-two million, two hundred forty-three thousand, six hundred ninety-seven".