12947312 has 20 divisors (see below), whose sum is σ = 28669296. Its totient is φ = 5548800.

The previous prime is 12947293. The next prime is 12947323. The reversal of 12947312 is 21374921.

12947312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 57689 + ... + 57912.

Almost surely, 2^12947312 is an apocalyptic number.

It is an amenable number.

12947312 is an abundant number, since it is smaller than the sum of its proper divisors (15721984).

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

12947312 is a wasteful number, since it uses less digits than its factorization.

12947312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115616 (or 115610 counting only the distinct ones).

The product of its digits is 3024, while the sum is 29.

The square root of 12947312 is about 3598.2373462572. The cubic root of 12947312 is about 234.8153793664.

The spelling of 12947312 in words is "twelve million, nine hundred forty-seven thousand, three hundred twelve".