9728862 has 128 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 2365440.

The previous prime is 9728861. The next prime is 9728867. The reversal of 9728862 is 2688279.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9728861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 335464 + ... + 335492.

It is an arithmetic number, because the mean of its divisors is an integer number (204120).

Almost surely, 2^9728862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9728862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13063680).

9728862 is an abundant number, since it is smaller than the sum of its proper divisors (16398498).

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

9728862 is a wasteful number, since it uses less digits than its factorization.

9728862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98.

The product of its digits is 96768, while the sum is 42.

The square root of 9728862 is about 3119.1123737371. The cubic root of 9728862 is about 213.4784369808.

The spelling of 9728862 in words is "nine million, seven hundred twenty-eight thousand, eight hundred sixty-two".