7320 has 32 divisors (see below), whose sum is σ = 22320. Its totient is φ = 1920.

The previous prime is 7309. The next prime is 7321. The reversal of 7320 is 237.

7320 is nontrivially palindromic in base 11.

It is a Harshad number since it is a multiple of its sum of digits (12).

7320 is a nontrivial repdigit in base 11.

It is a plaindrome in base 11.

It is a nialpdrome in base 10 and base 11.

It is a zygodrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 7296 and 7305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90 + ... + 150.

2⁷³²⁰ 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 7320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11160).

7320 is an abundant number, since it is smaller than the sum of its proper divisors (15000).

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

7320 is a wasteful number, since it uses less digits than its factorization.

7320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 12.

The square root of 7320 is about 85.5569985448. The cubic root of 7320 is about 19.4164737671.

Adding to 7320 its reverse (237), we get a palindrome (7557).

The spelling of 7320 in words is "seven thousand, three hundred twenty", and thus it is an iban number.