12811378 has 8 divisors (see below), whose sum is σ = 19542960. Its totient is φ = 6297060.

The previous prime is 12811373. The next prime is 12811397. The reversal of 12811378 is 87311821.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (12811373) 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 3 ways as a sum of consecutive naturals, for example, 54168 + ... + 54403.

It is an arithmetic number, because the mean of its divisors is an integer number (2442870).

Almost surely, 2^12811378 is an apocalyptic number.

12811378 is a deficient number, since it is larger than the sum of its proper divisors (6731582).

12811378 is a wasteful number, since it uses less digits than its factorization.

12811378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108632.

The product of its digits is 2688, while the sum is 31.

The square root of 12811378 is about 3579.2985346294. The cubic root of 12811378 is about 233.9907099339.

The spelling of 12811378 in words is "twelve million, eight hundred eleven thousand, three hundred seventy-eight".