12456216 has 48 divisors (see below), whose sum is σ = 34056360. Its totient is φ = 4112640.

The previous prime is 12456211. The next prime is 12456217. The reversal of 12456216 is 61265421.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12456216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12456211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7371 + ... + 8901.

Almost surely, 2^12456216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12456216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17028180).

12456216 is an abundant number, since it is smaller than the sum of its proper divisors (21600144).

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

12456216 is a wasteful number, since it uses less digits than its factorization.

12456216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656 (or 1649 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 12456216 is about 3529.3364815500. The cubic root of 12456216 is about 231.8081549191.

The spelling of 12456216 in words is "twelve million, four hundred fifty-six thousand, two hundred sixteen".