9984728 has 64 divisors (see below), whose sum is σ = 22041600. Its totient is φ = 4199040.

The previous prime is 9984713. The next prime is 9984739. The reversal of 9984728 is 8274899.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61175 + ... + 61337.

It is an arithmetic number, because the mean of its divisors is an integer number (344400).

Almost surely, 2^9984728 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 9984728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11020800).

9984728 is an abundant number, since it is smaller than the sum of its proper divisors (12056872).

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

9984728 is a wasteful number, since it uses less digits than its factorization.

9984728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 228 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 9984728 is about 3159.8620223041. The cubic root of 9984728 is about 215.3337380352. Note that the first 3 decimals are identical.

The spelling of 9984728 in words is "nine million, nine hundred eighty-four thousand, seven hundred twenty-eight".