9728556 has 48 divisors (see below), whose sum is σ = 24321024. Its totient is φ = 3015936.

The previous prime is 9728533. The next prime is 9728557. The reversal of 9728556 is 6558279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9728557) 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, 20781 + ... + 21243.

It is an arithmetic number, because the mean of its divisors is an integer number (506688).

Almost surely, 2^9728556 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 9728556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12160512).

9728556 is an abundant number, since it is smaller than the sum of its proper divisors (14592468).

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

9728556 is a wasteful number, since it uses less digits than its factorization.

9728556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590 (or 588 counting only the distinct ones).

The product of its digits is 151200, while the sum is 42.

The square root of 9728556 is about 3119.0633209347. The cubic root of 9728556 is about 213.4761987921.

The spelling of 9728556 in words is "nine million, seven hundred twenty-eight thousand, five hundred fifty-six".