12224678 has 4 divisors (see below), whose sum is σ = 18337020. Its totient is φ = 6112338.

The previous prime is 12224669. The next prime is 12224687. The reversal of 12224678 is 87642221.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12224669) and next prime (12224687).

It is a plaindrome in base 10.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 3056168 + ... + 3056171.

It is an arithmetic number, because the mean of its divisors is an integer number (4584255).

Almost surely, 2^12224678 is an apocalyptic number.

12224678 is a deficient number, since it is larger than the sum of its proper divisors (6112342).

12224678 is an equidigital number, since it uses as much as digits as its factorization.

12224678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112341.

The product of its digits is 10752, while the sum is 32.

The square root of 12224678 is about 3496.3807000955. The cubic root of 12224678 is about 230.3628676616.

Adding to 12224678 its reverse (87642221), we get a palindrome (99866899).

The spelling of 12224678 in words is "twelve million, two hundred twenty-four thousand, six hundred seventy-eight".