7182216 has 64 divisors (see below), whose sum is σ = 20462400. Its totient is φ = 2332800.

The previous prime is 7182193. The next prime is 7182221. The reversal of 7182216 is 6122817.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 7182216.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8451 + ... + 9261.

It is an arithmetic number, because the mean of its divisors is an integer number (319725).

Almost surely, 2^7182216 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 7182216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10231200).

7182216 is an abundant number, since it is smaller than the sum of its proper divisors (13280184).

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

7182216 is a wasteful number, since it uses less digits than its factorization.

7182216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867 (or 857 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 7182216 is about 2679.9656714219. The cubic root of 7182216 is about 192.9387619258.

The spelling of 7182216 in words is "seven million, one hundred eighty-two thousand, two hundred sixteen".