12756378 has 8 divisors (see below), whose sum is σ = 25512768. Its totient is φ = 4252124.

The previous prime is 12756343. The next prime is 12756389. The reversal of 12756378 is 87365721.

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

12756378 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1063026 + ... + 1063037.

It is an arithmetic number, because the mean of its divisors is an integer number (3189096).

Almost surely, 2^12756378 is an apocalyptic number.

12756378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12756378 is a wasteful number, since it uses less digits than its factorization.

12756378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126068.

The product of its digits is 70560, while the sum is 39.

The square root of 12756378 is about 3571.6072012471. The cubic root of 12756378 is about 233.6553843197.

The spelling of 12756378 in words is "twelve million, seven hundred fifty-six thousand, three hundred seventy-eight".