9210720 has 96 divisors (see below), whose sum is σ = 29998080. Its totient is φ = 2373120.

The previous prime is 9210713. The next prime is 9210727. The reversal of 9210720 is 270129.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9210713) and next prime (9210727).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9210727) 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, 14571 + ... + 15189.

It is an arithmetic number, because the mean of its divisors is an integer number (312480).

Almost surely, 2^9210720 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 9210720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14999040).

9210720 is an abundant number, since it is smaller than the sum of its proper divisors (20787360).

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

9210720 is a wasteful number, since it uses less digits than its factorization.

9210720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 9210720 is about 3034.9168028135. The cubic root of 9210720 is about 209.6192647833.

Adding to 9210720 its reverse (270129), we get a palindrome (9480849).

The spelling of 9210720 in words is "nine million, two hundred ten thousand, seven hundred twenty".