22243426 has 4 divisors (see below), whose sum is σ = 33365142. Its totient is φ = 11121712.

The previous prime is 22243423. The next prime is 22243439. The reversal of 22243426 is 62434222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62434222 = 2 ⋅31217111.

It can be written as a sum of positive squares in only one way, i.e., 20693401 + 1550025 = 4549^2 + 1245^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22243426.

It is not an unprimeable number, because it can be changed into a prime (22243423) 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 as a sum of consecutive naturals, namely, 5560855 + ... + 5560858.

Almost surely, 2^22243426 is an apocalyptic number.

22243426 is a deficient number, since it is larger than the sum of its proper divisors (11121716).

22243426 is a wasteful number, since it uses less digits than its factorization.

22243426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11121715.

The product of its digits is 4608, while the sum is 25.

The square root of 22243426 is about 4716.2936719420. The cubic root of 22243426 is about 281.2336131358.

Adding to 22243426 its reverse (62434222), we get a palindrome (84677648).

The spelling of 22243426 in words is "twenty-two million, two hundred forty-three thousand, four hundred twenty-six".