12656378 has 8 divisors (see below), whose sum is σ = 21696672. Its totient is φ = 5424156.

The previous prime is 12656377. The next prime is 12656387. The reversal of 12656378 is 87365621.

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 (12656377) 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, 452000 + ... + 452027.

It is an arithmetic number, because the mean of its divisors is an integer number (2712084).

Almost surely, 2^12656378 is an apocalyptic number.

12656378 is a deficient number, since it is larger than the sum of its proper divisors (9040294).

12656378 is an equidigital number, since it uses as much as digits as its factorization.

12656378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904036.

The product of its digits is 60480, while the sum is 38.

The square root of 12656378 is about 3557.5803574902. The cubic root of 12656378 is about 233.0432235750.

The spelling of 12656378 in words is "twelve million, six hundred fifty-six thousand, three hundred seventy-eight".