12878586 has 48 divisors (see below), whose sum is σ = 32645184. Its totient is φ = 3592512.

The previous prime is 12878563. The next prime is 12878603. The reversal of 12878586 is 68587821.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4230 + ... + 6606.

It is an arithmetic number, because the mean of its divisors is an integer number (680108).

Almost surely, 2^12878586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12878586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16322592).

12878586 is an abundant number, since it is smaller than the sum of its proper divisors (19766598).

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

12878586 is a wasteful number, since it uses less digits than its factorization.

12878586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435 (or 2432 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 12878586 is about 3588.6746857301. The cubic root of 12878586 is about 234.3991652950.

The spelling of 12878586 in words is "twelve million, eight hundred seventy-eight thousand, five hundred eighty-six".