12685944 has 96 divisors (see below), whose sum is σ = 35366400. Its totient is φ = 3786240.

The previous prime is 12685943. The next prime is 12685991. The reversal of 12685944 is 44958621.

It is a super-2 number, since 2×12685944² = 321866350342272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12685943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 214987 + ... + 215045.

It is an arithmetic number, because the mean of its divisors is an integer number (368400).

Almost surely, 2^12685944 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 12685944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17683200).

12685944 is an abundant number, since it is smaller than the sum of its proper divisors (22680456).

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

12685944 is a wasteful number, since it uses less digits than its factorization.

12685944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 112 counting only the distinct ones).

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

The square root of 12685944 is about 3561.7332859157. The cubic root of 12685944 is about 233.2245497448.

It can be divided in two parts, 12 and 685944, that multiplied together give a palindrome (8231328).

The spelling of 12685944 in words is "twelve million, six hundred eighty-five thousand, nine hundred forty-four".