9806720 has 128 divisors (see below), whose sum is σ = 29376000. Its totient is φ = 3041280.

The previous prime is 9806701. The next prime is 9806729. The reversal of 9806720 is 276089.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9806729) 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, 49181 + ... + 49379.

It is an arithmetic number, because the mean of its divisors is an integer number (229500).

Almost surely, 2^9806720 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 9806720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14688000).

9806720 is an abundant number, since it is smaller than the sum of its proper divisors (19569280).

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

9806720 is a wasteful number, since it uses less digits than its factorization.

9806720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 9806720 is about 3131.5682971955. The cubic root of 9806720 is about 214.0463986504.

The spelling of 9806720 in words is "nine million, eight hundred six thousand, seven hundred twenty".