12897315 has 24 divisors (see below), whose sum is σ = 23128560. Its totient is φ = 6640704.

The previous prime is 12897301. The next prime is 12897331. The reversal of 12897315 is 51379821.

It is not a de Polignac number, because 12897315 - 2⁶ = 12897251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12897315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3637 + ... + 6246.

It is an arithmetic number, because the mean of its divisors is an integer number (963690).

Almost surely, 2^12897315 is an apocalyptic number.

12897315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12897315 is a deficient number, since it is larger than the sum of its proper divisors (10231245).

12897315 is a wasteful number, since it uses less digits than its factorization.

12897315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9923 (or 9920 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 12897315 is about 3591.2831968532. The cubic root of 12897315 is about 234.5127371723.

The spelling of 12897315 in words is "twelve million, eight hundred ninety-seven thousand, three hundred fifteen".