7210320 has 80 divisors (see below), whose sum is σ = 24081792. Its totient is φ = 1774080.

The previous prime is 7210319. The next prime is 7210327. The reversal of 7210320 is 230127.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 7210320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7210327) 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, 1965 + ... + 4275.

Almost surely, 2^7210320 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 7210320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12040896).

7210320 is an abundant number, since it is smaller than the sum of its proper divisors (16871472).

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

7210320 is a wasteful number, since it uses less digits than its factorization.

7210320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340 (or 2334 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 7210320 is about 2685.2039028722. The cubic root of 7210320 is about 193.1900907520.

Adding to 7210320 its reverse (230127), we get a palindrome (7440447).

The spelling of 7210320 in words is "seven million, two hundred ten thousand, three hundred twenty".