12678387 has 8 divisors (see below), whose sum is σ = 16926720. Its totient is φ = 8441160.

The previous prime is 12678371. The next prime is 12678427. The reversal of 12678387 is 78387621.

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

It is not a de Polignac number, because 12678387 - 2⁴ = 12678371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12671387) 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, 414 + ... + 5052.

It is an arithmetic number, because the mean of its divisors is an integer number (2115840).

Almost surely, 2^12678387 is an apocalyptic number.

12678387 is a deficient number, since it is larger than the sum of its proper divisors (4248333).

12678387 is an equidigital number, since it uses as much as digits as its factorization.

12678387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553.

The product of its digits is 112896, while the sum is 42.

The square root of 12678387 is about 3560.6722679854. The cubic root of 12678387 is about 233.1782300278.

The spelling of 12678387 in words is "twelve million, six hundred seventy-eight thousand, three hundred eighty-seven".