9930720 has 96 divisors (see below), whose sum is σ = 33149088. Its totient is φ = 2490368.

The previous prime is 9930707. The next prime is 9930773. The reversal of 9930720 is 270399.

9930720 is digitally balanced in base 2 and base 4, because in such bases 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 (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7552 + ... + 8768.

It is an arithmetic number, because the mean of its divisors is an integer number (345303).

Almost surely, 2^9930720 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 9930720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16574544).

9930720 is an abundant number, since it is smaller than the sum of its proper divisors (23218368).

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

9930720 is a wasteful number, since it uses less digits than its factorization.

9930720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252 (or 1244 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 9930720 is about 3151.3044917938. The cubic root of 9930720 is about 214.9447848116.

The spelling of 9930720 in words is "nine million, nine hundred thirty thousand, seven hundred twenty".