1116220 has 72 divisors (see below), whose sum is σ = 2930256. Its totient is φ = 354816.

The previous prime is 1116209. The next prime is 1116223. The reversal of 1116220 is 226111.

It is a self number, because there is not a number n which added to its sum of digits gives 1116220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16627 + ... + 16693.

It is an arithmetic number, because the mean of its divisors is an integer number (40698).

2^1116220 is an apocalyptic number.

1116220 is a gapful number since it is divisible by the number (10) 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 1116220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1465128).

1116220 is an abundant number, since it is smaller than the sum of its proper divisors (1814036).

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

1116220 is a wasteful number, since it uses less digits than its factorization.

1116220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1116220 is about 1056.5131329047. The cubic root of 1116220 is about 103.7329192377.

The spelling of 1116220 in words is "one million, one hundred sixteen thousand, two hundred twenty".