12859218 has 24 divisors (see below), whose sum is σ = 27927900. Its totient is φ = 4276224.

The previous prime is 12859211. The next prime is 12859229. The reversal of 12859218 is 81295821.

It can be written as a sum of positive squares in 2 ways, for example, as 11108889 + 1750329 = 3333^2 + 1323^2 .

It is not an unprimeable number, because it can be changed into a prime (12859211) 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 11 ways as a sum of consecutive naturals, for example, 13378 + ... + 14306.

Almost surely, 2^12859218 is an apocalyptic number.

12859218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12859218 is an abundant number, since it is smaller than the sum of its proper divisors (15068682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12859218 is a wasteful number, since it uses less digits than its factorization.

12859218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706 (or 1703 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 12859218 is about 3585.9751811746. The cubic root of 12859218 is about 234.2816026799.

The spelling of 12859218 in words is "twelve million, eight hundred fifty-nine thousand, two hundred eighteen".