12704287 has 8 divisors (see below), whose sum is σ = 13673232. Its totient is φ = 11760000.

The previous prime is 12704273. The next prime is 12704297. The reversal of 12704287 is 78240721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12704287 is a prime.

It is a super-2 number, since 2×12704287² = 322797816356738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12704267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5089 + ... + 7162.

It is an arithmetic number, because the mean of its divisors is an integer number (1709154).

Almost surely, 2^12704287 is an apocalyptic number.

12704287 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12704287 is a deficient number, since it is larger than the sum of its proper divisors (968945).

12704287 is a wasteful number, since it uses less digits than its factorization.

12704287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12329.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 12704287 is about 3564.3073660951. The cubic root of 12704287 is about 233.3369044805.

The spelling of 12704287 in words is "twelve million, seven hundred four thousand, two hundred eighty-seven".