9539728 has 40 divisors (see below), whose sum is σ = 20489760. Its totient is φ = 4266240.

The previous prime is 9539711. The next prime is 9539741. The reversal of 9539728 is 8279359.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11388 + ... + 12196.

It is an arithmetic number, because the mean of its divisors is an integer number (512244).

Almost surely, 2^9539728 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 9539728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10244880).

9539728 is an abundant number, since it is smaller than the sum of its proper divisors (10950032).

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

9539728 is a wasteful number, since it uses less digits than its factorization.

9539728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 889 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 9539728 is about 3088.6450103565. The cubic root of 9539728 is about 212.0859980992.

The spelling of 9539728 in words is "nine million, five hundred thirty-nine thousand, seven hundred twenty-eight".