22145746 has 12 divisors (see below), whose sum is σ = 38642238. Its totient is φ = 9490992.

The previous prime is 22145743. The next prime is 22145759. The reversal of 22145746 is 64754122.

It can be written as a sum of positive squares in only one way, i.e., 16313521 + 5832225 = 4039^2 + 2415^2 .

It is not an unprimeable number, because it can be changed into a prime (22145743) 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 5 ways as a sum of consecutive naturals, for example, 112891 + ... + 113086.

Almost surely, 2^22145746 is an apocalyptic number.

22145746 is a deficient number, since it is larger than the sum of its proper divisors (16496492).

22145746 is a wasteful number, since it uses less digits than its factorization.

22145746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225993 (or 225986 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 22145746 is about 4705.9266887617. The cubic root of 22145746 is about 280.8213383703.

Adding to 22145746 its reverse (64754122), we get a palindrome (86899868).

The spelling of 22145746 in words is "twenty-two million, one hundred forty-five thousand, seven hundred forty-six".