12861444 has 12 divisors (see below), whose sum is σ = 30010064. Its totient is φ = 4287144.

The previous prime is 12861427. The next prime is 12861463. The reversal of 12861444 is 44416821.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535882 + ... + 535905.

Almost surely, 2^12861444 is an apocalyptic number.

It is an amenable number.

12861444 is an abundant number, since it is smaller than the sum of its proper divisors (17148620).

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

12861444 is a wasteful number, since it uses less digits than its factorization.

12861444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071794 (or 1071792 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 12861444 is about 3586.2855435673. The cubic root of 12861444 is about 234.2951203696.

The spelling of 12861444 in words is "twelve million, eight hundred sixty-one thousand, four hundred forty-four".