12489218 has 24 divisors (see below), whose sum is σ = 22500864. Its totient is φ = 5178600.

The previous prime is 12489167. The next prime is 12489229. The reversal of 12489218 is 81298421.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 983 + ... + 5093.

It is an arithmetic number, because the mean of its divisors is an integer number (937536).

Almost surely, 2^12489218 is an apocalyptic number.

12489218 is a deficient number, since it is larger than the sum of its proper divisors (10011646).

12489218 is a wasteful number, since it uses less digits than its factorization.

12489218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158 (or 4151 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 12489218 is about 3534.0087719189. The cubic root of 12489218 is about 232.0126950049.

The spelling of 12489218 in words is "twelve million, four hundred eighty-nine thousand, two hundred eighteen".