1182216 has 64 divisors (see below), whose sum is σ = 3502080. Its totient is φ = 325440.

The previous prime is 1182211. The next prime is 1182253. The reversal of 1182216 is 6122811.

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a junction number, because it is equal to n+sod(n) for n = 1182192 and 1182201.

It is not an unprimeable number, because it can be changed into a prime (1182211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5095 + ... + 5321.

It is an arithmetic number, because the mean of its divisors is an integer number (54720).

2^1182216 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 1182216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1751040).

1182216 is an abundant number, since it is smaller than the sum of its proper divisors (2319864).

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

1182216 is a wasteful number, since it uses less digits than its factorization.

1182216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 270 counting only the distinct ones).

The product of its digits is 192, while the sum is 21.

The square root of 1182216 is about 1087.2975673660. The cubic root of 1182216 is about 105.7382887511.

The spelling of 1182216 in words is "one million, one hundred eighty-two thousand, two hundred sixteen".