9213320 has 48 divisors (see below), whose sum is σ = 22048740. Its totient is φ = 3464192.

The previous prime is 9213319. The next prime is 9213341. The reversal of 9213320 is 233129.

It can be written as a sum of positive squares in 6 ways, for example, as 6543364 + 2669956 = 2558^2 + 1634^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 9213292 and 9213301.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11162 + ... + 11958.

Almost surely, 2^9213320 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 9213320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11024370).

9213320 is an abundant number, since it is smaller than the sum of its proper divisors (12835420).

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

9213320 is a wasteful number, since it uses less digits than its factorization.

9213320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 9213320 is about 3035.3451204105. The cubic root of 9213320 is about 209.6389866876.

Adding to 9213320 its reverse (233129), we get a palindrome (9446449).

The spelling of 9213320 in words is "nine million, two hundred thirteen thousand, three hundred twenty".