12256646 has 8 divisors (see below), whose sum is σ = 18403200. Its totient is φ = 6122248.

The previous prime is 12256633. The next prime is 12256649. The reversal of 12256646 is 64665221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256649) by changing a digit.

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, 155 + ... + 4953.

It is an arithmetic number, because the mean of its divisors is an integer number (2300400).

Almost surely, 2^12256646 is an apocalyptic number.

12256646 is a deficient number, since it is larger than the sum of its proper divisors (6146554).

12256646 is a wasteful number, since it uses less digits than its factorization.

12256646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6078.

The product of its digits is 17280, while the sum is 32.

The square root of 12256646 is about 3500.9492998328. The cubic root of 12256646 is about 230.5634954465.

The spelling of 12256646 in words is "twelve million, two hundred fifty-six thousand, six hundred forty-six".