7223320 has 64 divisors (see below), whose sum is σ = 18144000. Its totient is φ = 2569728.

The previous prime is 7223303. The next prime is 7223323. The reversal of 7223320 is 233227.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7223323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14841 + ... + 15319.

It is an arithmetic number, because the mean of its divisors is an integer number (283500).

Almost surely, 2^7223320 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 7223320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9072000).

7223320 is an abundant number, since it is smaller than the sum of its proper divisors (10920680).

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

7223320 is a wasteful number, since it uses less digits than its factorization.

7223320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 7223320 is about 2687.6234855351. The cubic root of 7223320 is about 193.3061264397.

Adding to 7223320 its reverse (233227), we get a palindrome (7456547).

The spelling of 7223320 in words is "seven million, two hundred twenty-three thousand, three hundred twenty".