2196216 has 96 divisors (see below), whose sum is σ = 6739200. Its totient is φ = 640320.

The previous prime is 2196197. The next prime is 2196221. The reversal of 2196216 is 6126912.

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 2196216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37195 + ... + 37253.

It is an arithmetic number, because the mean of its divisors is an integer number (70200).

2^2196216 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 2196216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3369600).

2196216 is an abundant number, since it is smaller than the sum of its proper divisors (4542984).

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

2196216 is a wasteful number, since it uses less digits than its factorization.

2196216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 122 counting only the distinct ones).

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

The square root of 2196216 is about 1481.9635623051. The cubic root of 2196216 is about 129.9845346494.

The spelling of 2196216 in words is "two million, one hundred ninety-six thousand, two hundred sixteen".