9908720 has 40 divisors (see below), whose sum is σ = 23837760. Its totient is φ = 3825920.

The previous prime is 9908719. The next prime is 9908729. The reversal of 9908720 is 278099.

9908720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9908729) 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, 185 + ... + 4455.

It is an arithmetic number, because the mean of its divisors is an integer number (595944).

Almost surely, 2^9908720 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 9908720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11918880).

9908720 is an abundant number, since it is smaller than the sum of its proper divisors (13929040).

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

9908720 is a wasteful number, since it uses less digits than its factorization.

9908720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313 (or 4307 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 9908720 is about 3147.8119384741. The cubic root of 9908720 is about 214.7859416281.

The spelling of 9908720 in words is "nine million, nine hundred eight thousand, seven hundred twenty".