12897318 has 16 divisors (see below), whose sum is σ = 29479680. Its totient is φ = 3684936.

The previous prime is 12897301. The next prime is 12897331. The reversal of 12897318 is 81379821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153498 + ... + 153581.

It is an arithmetic number, because the mean of its divisors is an integer number (1842480).

Almost surely, 2^12897318 is an apocalyptic number.

12897318 is an abundant number, since it is smaller than the sum of its proper divisors (16582362).

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

12897318 is a wasteful number, since it uses less digits than its factorization.

12897318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307091.

The product of its digits is 24192, while the sum is 39.

The square root of 12897318 is about 3591.2836145312. The cubic root of 12897318 is about 234.5127553554.

The spelling of 12897318 in words is "twelve million, eight hundred ninety-seven thousand, three hundred eighteen".