12867216 has 40 divisors (see below), whose sum is σ = 33744864. Its totient is φ = 4224000.

The previous prime is 12867209. The next prime is 12867223. The reversal of 12867216 is 61276821.

It is an interprime number because it is at equal distance from previous prime (12867209) and next prime (12867223).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216 + ... + 5216.

Almost surely, 2^12867216 is an apocalyptic number.

12867216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12867216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16872432).

12867216 is an abundant number, since it is smaller than the sum of its proper divisors (20877648).

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

12867216 is a wasteful number, since it uses less digits than its factorization.

12867216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079 (or 4073 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 12867216 is about 3587.0901856519. The cubic root of 12867216 is about 234.3301643658.

The spelling of 12867216 in words is "twelve million, eight hundred sixty-seven thousand, two hundred sixteen".