12257618 has 16 divisors (see below), whose sum is σ = 18732480. Its totient is φ = 6014736.

The previous prime is 12257611. The next prime is 12257621. The reversal of 12257618 is 81675221.

It is not an unprimeable number, because it can be changed into a prime (12257611) 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 7 ways as a sum of consecutive naturals, for example, 32153 + ... + 32531.

It is an arithmetic number, because the mean of its divisors is an integer number (1170780).

Almost surely, 2^12257618 is an apocalyptic number.

12257618 is a deficient number, since it is larger than the sum of its proper divisors (6474862).

12257618 is a wasteful number, since it uses less digits than its factorization.

12257618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641.

The product of its digits is 6720, while the sum is 32.

The square root of 12257618 is about 3501.0881165718. The cubic root of 12257618 is about 230.5695901480.

The spelling of 12257618 in words is "twelve million, two hundred fifty-seven thousand, six hundred eighteen".