12587305 has 16 divisors (see below), whose sum is σ = 15966720. Its totient is φ = 9510592.

The previous prime is 12587303. The next prime is 12587381. The reversal of 12587305 is 50378521.

It is a cyclic number.

It is not a de Polignac number, because 12587305 - 2¹ = 12587303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12587303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5892 + ... + 7738.

It is an arithmetic number, because the mean of its divisors is an integer number (997920).

Almost surely, 2^12587305 is an apocalyptic number.

It is an amenable number.

12587305 is a deficient number, since it is larger than the sum of its proper divisors (3379415).

12587305 is a wasteful number, since it uses less digits than its factorization.

12587305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 12587305 is about 3547.8592136667. The cubic root of 12587305 is about 232.6185005051.

The spelling of 12587305 in words is "twelve million, five hundred eighty-seven thousand, three hundred five".