9320220 has 144 divisors (see below), whose sum is σ = 34856640. Its totient is φ = 1963008.

The previous prime is 9320191. The next prime is 9320231. The reversal of 9320220 is 220239.

9320220 is nontrivially palindromic in base 8.

9320220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 9320193 and 9320202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16096 + ... + 16664.

It is an arithmetic number, because the mean of its divisors is an integer number (242060).

Almost surely, 2^9320220 is an apocalyptic number.

9320220 is a gapful number since it is divisible by the number (90) 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 9320220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17428320).

9320220 is an abundant number, since it is smaller than the sum of its proper divisors (25536420).

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

9320220 is a wasteful number, since it uses less digits than its factorization.

9320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 9320220 is about 3052.9035359801. The cubic root of 9320220 is about 210.4466683141.

Adding to 9320220 its reverse (220239), we get a palindrome (9540459).

The spelling of 9320220 in words is "nine million, three hundred twenty thousand, two hundred twenty".