12947718 has 64 divisors (see below), whose sum is σ = 31030272. Its totient is φ = 3525120.

The previous prime is 12947681. The next prime is 12947719. The reversal of 12947718 is 81774921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12947719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125655 + ... + 125757.

It is an arithmetic number, because the mean of its divisors is an integer number (484848).

Almost surely, 2^12947718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12947718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15515136).

12947718 is an abundant number, since it is smaller than the sum of its proper divisors (18082554).

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

12947718 is a wasteful number, since it uses less digits than its factorization.

12947718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229.

The product of its digits is 28224, while the sum is 39.

The square root of 12947718 is about 3598.2937623268. The cubic root of 12947718 is about 234.8178337767.

The spelling of 12947718 in words is "twelve million, nine hundred forty-seven thousand, seven hundred eighteen".