12944556 has 48 divisors (see below), whose sum is σ = 34725600. Its totient is φ = 4165056.

The previous prime is 12944551. The next prime is 12944557. The reversal of 12944556 is 65544921.

12944556 is a `hidden beast` number, since 12 + 94 + 4 + 556 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12944556.

It is not an unprimeable number, because it can be changed into a prime (12944551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1066 + ... + 5198.

It is an arithmetic number, because the mean of its divisors is an integer number (723450).

Almost surely, 2^12944556 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 12944556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17362800).

12944556 is an abundant number, since it is smaller than the sum of its proper divisors (21781044).

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

12944556 is a wasteful number, since it uses less digits than its factorization.

12944556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175 (or 4167 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 12944556 is about 3597.8543605877. The cubic root of 12944556 is about 234.7987170376.

The spelling of 12944556 in words is "twelve million, nine hundred forty-four thousand, five hundred fifty-six".