12872418 has 32 divisors (see below), whose sum is σ = 28089600. Its totient is φ = 3908736.

The previous prime is 12872413. The next prime is 12872423. The reversal of 12872418 is 81427821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12872413) and next prime (12872423).

It is not an unprimeable number, because it can be changed into a prime (12872413) 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 15 ways as a sum of consecutive naturals, for example, 5118 + ... + 7206.

It is an arithmetic number, because the mean of its divisors is an integer number (877800).

Almost surely, 2^12872418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12872418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14044800).

12872418 is an abundant number, since it is smaller than the sum of its proper divisors (15217182).

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

12872418 is a wasteful number, since it uses less digits than its factorization.

12872418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186.

The product of its digits is 7168, while the sum is 33.

The square root of 12872418 is about 3587.8152126329. The cubic root of 12872418 is about 234.3617386986.

The spelling of 12872418 in words is "twelve million, eight hundred seventy-two thousand, four hundred eighteen".