9220 has 12 divisors (see below), whose sum is σ = 19404. Its totient is φ = 3680.

The previous prime is 9209. The next prime is 9221. The reversal of 9220 is 229.

It can be written as a sum of positive squares in 2 ways, for example, as 3136 + 6084 = 56^2 + 78^2 .

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9220.

It is not an unprimeable number, because it can be changed into a prime (9221) by changing a digit.

9220 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211 + ... + 250.

It is an arithmetic number, because the mean of its divisors is an integer number (1617).

2⁹²²⁰ is an apocalyptic number.

It is an amenable number.

9220 is an abundant number, since it is smaller than the sum of its proper divisors (10184).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9702).

9220 is a wasteful number, since it uses less digits than its factorization.

9220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 9220 is about 96.0208310733. The cubic root of 9220 is about 20.9689639804.

Adding to 9220 its reverse (229), we get a palindrome (9449).

The spelling of 9220 in words is "nine thousand, two hundred twenty".