9275728 has 40 divisors (see below), whose sum is σ = 22409280. Its totient is φ = 3613440.

The previous prime is 9275701. The next prime is 9275731. The reversal of 9275728 is 8275729.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 9⁵ + 2¹² + 7³ + 5² + 7⁷ + 2²³ + 8² .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2533 + ... + 4996.

It is an arithmetic number, because the mean of its divisors is an integer number (560232).

Almost surely, 2^9275728 is an apocalyptic number.

It is an amenable number.

9275728 is an abundant number, since it is smaller than the sum of its proper divisors (13133552).

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

9275728 is a wasteful number, since it uses less digits than its factorization.

9275728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555 (or 7549 counting only the distinct ones).

The product of its digits is 70560, while the sum is 40.

The square root of 9275728 is about 3045.6079852798. The cubic root of 9275728 is about 210.1112637903. Note that the first 3 decimals are identical.

Subtracting from 9275728 its reverse (8275729), we obtain a palindrome (999999).

The spelling of 9275728 in words is "nine million, two hundred seventy-five thousand, seven hundred twenty-eight".