12937287 has 16 divisors (see below), whose sum is σ = 18893952. Its totient is φ = 7809120.

The previous prime is 12937273. The next prime is 12937333. The reversal of 12937287 is 78273921.

12937287 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12937287 - 2¹¹ = 12935239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12937207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9493 + ... + 10769.

It is an arithmetic number, because the mean of its divisors is an integer number (1180872).

Almost surely, 2^12937287 is an apocalyptic number.

12937287 is a deficient number, since it is larger than the sum of its proper divisors (5956665).

12937287 is a wasteful number, since it uses less digits than its factorization.

12937287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598.

The product of its digits is 42336, while the sum is 39.

The square root of 12937287 is about 3596.8440333159. The cubic root of 12937287 is about 234.7547584950.

The spelling of 12937287 in words is "twelve million, nine hundred thirty-seven thousand, two hundred eighty-seven".