9880720 has 40 divisors (see below), whose sum is σ = 23197176. Its totient is φ = 3913728.

The previous prime is 9880709. The next prime is 9880721. The reversal of 9880720 is 270889.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1024144 + 8856576 = 1012^2 + 2976^2 .

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

It is not an unprimeable number, because it can be changed into a prime (9880721) 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, 8494 + ... + 9586.

Almost surely, 2^9880720 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 9880720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11598588).

9880720 is an abundant number, since it is smaller than the sum of its proper divisors (13316456).

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

9880720 is a wasteful number, since it uses less digits than its factorization.

9880720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219 (or 1213 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 9880720 is about 3143.3612582712. The cubic root of 9880720 is about 214.5834371655.

The spelling of 9880720 in words is "nine million, eight hundred eighty thousand, seven hundred twenty".