22145224 has 16 divisors (see below), whose sum is σ = 41652720. Its totient is φ = 11037840.

The previous prime is 22145209. The next prime is 22145243. The reversal of 22145224 is 42254122.

It is a junction number, because it is equal to n+sod(n) for n = 22145195 and 22145204.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1534 + ... + 6829.

It is an arithmetic number, because the mean of its divisors is an integer number (2603295).

Almost surely, 2^22145224 is an apocalyptic number.

It is an amenable number.

22145224 is a deficient number, since it is larger than the sum of its proper divisors (19507496).

22145224 is a wasteful number, since it uses less digits than its factorization.

22145224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8700 (or 8696 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 22145224 is about 4705.8712264574. The cubic root of 22145224 is about 280.8191319286.

Adding to 22145224 its reverse (42254122), we get a palindrome (64399346).

The spelling of 22145224 in words is "twenty-two million, one hundred forty-five thousand, two hundred twenty-four".