12987415 has 8 divisors (see below), whose sum is σ = 17811360. Its totient is φ = 8905632.

The previous prime is 12987413. The next prime is 12987437. The reversal of 12987415 is 51478921.

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

It is a cyclic number.

It is not a de Polignac number, because 12987415 - 2¹ = 12987413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12987413) 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 7 ways as a sum of consecutive naturals, for example, 185500 + ... + 185569.

It is an arithmetic number, because the mean of its divisors is an integer number (2226420).

Almost surely, 2^12987415 is an apocalyptic number.

12987415 is a deficient number, since it is larger than the sum of its proper divisors (4823945).

12987415 is an equidigital number, since it uses as much as digits as its factorization.

12987415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371081.

The product of its digits is 20160, while the sum is 37.

The square root of 12987415 is about 3603.8056273889. The cubic root of 12987415 is about 235.0575685127.

The spelling of 12987415 in words is "twelve million, nine hundred eighty-seven thousand, four hundred fifteen".