9509728 has 24 divisors (see below), whose sum is σ = 19708920. Its totient is φ = 4504320.

The previous prime is 9509723. The next prime is 9509729. The reversal of 9509728 is 8279059.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9509723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7213 + ... + 8428.

It is an arithmetic number, because the mean of its divisors is an integer number (821205).

Almost surely, 2^9509728 is an apocalyptic number.

It is an amenable number.

9509728 is an abundant number, since it is smaller than the sum of its proper divisors (10199192).

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

9509728 is a wasteful number, since it uses less digits than its factorization.

9509728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15670 (or 15662 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 9509728 is about 3083.7846876849. The cubic root of 9509728 is about 211.8634459405.

It can be divided in two parts, 950 and 9728, that multiplied together give a square (9241600 = 3040²).

The spelling of 9509728 in words is "nine million, five hundred nine thousand, seven hundred twenty-eight".