12345224 has 16 divisors (see below), whose sum is σ = 23297100. Its totient is φ = 6132672.

The previous prime is 12345211. The next prime is 12345233. The reversal of 12345224 is 42254321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12124324 + 220900 = 3482^2 + 470^2 .

It is a super-2 number, since 2×12345224² = 304809111220352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12345224.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3659 + ... + 6170.

Almost surely, 2^12345224 is an apocalyptic number.

It is an amenable number.

12345224 is a deficient number, since it is larger than the sum of its proper divisors (10951876).

12345224 is a wasteful number, since it uses less digits than its factorization.

12345224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9992 (or 9988 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 12345224 is about 3513.5770946430. The cubic root of 12345224 is about 231.1175853572.

Adding to 12345224 its reverse (42254321), we get a palindrome (54599545).

The spelling of 12345224 in words is "twelve million, three hundred forty-five thousand, two hundred twenty-four".