12256717 has 8 divisors (see below), whose sum is σ = 13400640. Its totient is φ = 11117760.

The previous prime is 12256697. The next prime is 12256733. The reversal of 12256717 is 71765221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12256717 is a prime.

It is a super-2 number, since 2×12256717² = 300454223236178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12256747) 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 7 ways as a sum of consecutive naturals, for example, 5584 + ... + 7462.

It is an arithmetic number, because the mean of its divisors is an integer number (1675080).

Almost surely, 2^12256717 is an apocalyptic number.

It is an amenable number.

12256717 is a deficient number, since it is larger than the sum of its proper divisors (1143923).

12256717 is a wasteful number, since it uses less digits than its factorization.

12256717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2483.

The product of its digits is 5880, while the sum is 31.

The square root of 12256717 is about 3500.9594399250. The cubic root of 12256717 is about 230.5639406465.

The spelling of 12256717 in words is "twelve million, two hundred fifty-six thousand, seven hundred seventeen".