12886544 has 80 divisors (see below), whose sum is σ = 29730240. Its totient is φ = 5345280.

The previous prime is 12886499. The next prime is 12886553. The reversal of 12886544 is 44568821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12886498 and 12886507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176492 + ... + 176564.

It is an arithmetic number, because the mean of its divisors is an integer number (371628).

Almost surely, 2^12886544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12886544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14865120).

12886544 is an abundant number, since it is smaller than the sum of its proper divisors (16843696).

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

12886544 is a wasteful number, since it uses less digits than its factorization.

12886544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 162 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The square root of 12886544 is about 3589.7832803667. The cubic root of 12886544 is about 234.4474357204.

The spelling of 12886544 in words is "twelve million, eight hundred eighty-six thousand, five hundred forty-four".