12224578 has 16 divisors (see below), whose sum is σ = 18939960. Its totient is φ = 5913216.

The previous prime is 12224561. The next prime is 12224587. The reversal of 12224578 is 87542221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9102289 + 3122289 = 3017^2 + 1767^2 .

It is a plaindrome in base 10.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16888 + ... + 17596.

Almost surely, 2^12224578 is an apocalyptic number.

12224578 is a deficient number, since it is larger than the sum of its proper divisors (6715382).

12224578 is a wasteful number, since it uses less digits than its factorization.

12224578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its digits is 8960, while the sum is 31.

The square root of 12224578 is about 3496.3663995640. The cubic root of 12224578 is about 230.3622395237.

Adding to 12224578 its reverse (87542221), we get a palindrome (99766799).

The spelling of 12224578 in words is "twelve million, two hundred twenty-four thousand, five hundred seventy-eight".