9216216 has 48 divisors (see below), whose sum is σ = 26278200. Its totient is φ = 2909952.

The previous prime is 9216199. The next prime is 9216239. The reversal of 9216216 is 6126129.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 9216216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2001 + ... + 4736.

Almost surely, 2^9216216 is an apocalyptic number.

It is an amenable number.

9216216 is an abundant number, since it is smaller than the sum of its proper divisors (17061984).

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

9216216 is a wasteful number, since it uses less digits than its factorization.

9216216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6768 (or 6761 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 9216216 is about 3035.8221291769. The cubic root of 9216216 is about 209.6609494873.

It can be divided in two parts, 9 and 216216, that added together give a square (216225 = 465²).

The spelling of 9216216 in words is "nine million, two hundred sixteen thousand, two hundred sixteen".