12687378 has 16 divisors (see below), whose sum is σ = 27681696. Its totient is φ = 3844640.

The previous prime is 12687377. The next prime is 12687379. The reversal of 12687378 is 87378621.

It is an interprime number because it is at equal distance from previous prime (12687377) and next prime (12687379).

It is not an unprimeable number, because it can be changed into a prime (12687373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96051 + ... + 96182.

It is an arithmetic number, because the mean of its divisors is an integer number (1730106).

Almost surely, 2^12687378 is an apocalyptic number.

12687378 is an abundant number, since it is smaller than the sum of its proper divisors (14994318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12687378 is a wasteful number, since it uses less digits than its factorization.

12687378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192249.

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

The square root of 12687378 is about 3561.9345867099. The cubic root of 12687378 is about 233.2333371976.

It can be divided in two parts, 1268 and 7378, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 12687378 in words is "twelve million, six hundred eighty-seven thousand, three hundred seventy-eight".