12427328 has 28 divisors (see below), whose sum is σ = 24784812. Its totient is φ = 6182400.

The previous prime is 12427321. The next prime is 12427339. The reversal of 12427328 is 82372421.

It can be written as a sum of positive squares in 2 ways, for example, as 6512704 + 5914624 = 2552^2 + 2432^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12427328.

It is not an unprimeable number, because it can be changed into a prime (12427321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17378 + ... + 18078.

Almost surely, 2^12427328 is an apocalyptic number.

It is an amenable number.

12427328 is a deficient number, since it is larger than the sum of its proper divisors (12357484).

12427328 is an equidigital number, since it uses as much as digits as its factorization.

12427328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990 (or 980 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 12427328 is about 3525.2415520075. The cubic root of 12427328 is about 231.6288158807.

Adding to 12427328 its reverse (82372421), we get a palindrome (94799749).

The spelling of 12427328 in words is "twelve million, four hundred twenty-seven thousand, three hundred twenty-eight".