12986544 has 20 divisors (see below), whose sum is σ = 33548696. Its totient is φ = 4328832.

The previous prime is 12986527. The next prime is 12986563. The reversal of 12986544 is 44568921.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135229 + ... + 135324.

Almost surely, 2^12986544 is an apocalyptic number.

It is an amenable number.

12986544 is an abundant number, since it is smaller than the sum of its proper divisors (20562152).

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

12986544 is a wasteful number, since it uses less digits than its factorization.

12986544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270564 (or 270558 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 12986544 is about 3603.6847808875. The cubic root of 12986544 is about 235.0523136893.

It can be divided in two parts, 12986 and 544, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 12986544 in words is "twelve million, nine hundred eighty-six thousand, five hundred forty-four".