12247618 has 8 divisors (see below), whose sum is σ = 18534348. Its totient is φ = 6069504.

The previous prime is 12247603. The next prime is 12247619. The reversal of 12247618 is 81674221.

It can be written as a sum of positive squares in 2 ways, for example, as 12020089 + 227529 = 3467^2 + 477^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12247618.

It is not an unprimeable number, because it can be changed into a prime (12247619) by changing a digit.

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, 26871 + ... + 27322.

Almost surely, 2^12247618 is an apocalyptic number.

12247618 is a deficient number, since it is larger than the sum of its proper divisors (6286730).

12247618 is a wasteful number, since it uses less digits than its factorization.

12247618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54308.

The product of its digits is 5376, while the sum is 31.

The square root of 12247618 is about 3499.6596977421. The cubic root of 12247618 is about 230.5068720572.

The spelling of 12247618 in words is "twelve million, two hundred forty-seven thousand, six hundred eighteen".