9440728 has 32 divisors (see below), whose sum is σ = 19595520. Its totient is φ = 4228000.

The previous prime is 9440723. The next prime is 9440791. The reversal of 9440728 is 8270449.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9440693 and 9440702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9440723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5493 + ... + 7003.

It is an arithmetic number, because the mean of its divisors is an integer number (612360).

Almost surely, 2^9440728 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 9440728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9797760).

9440728 is an abundant number, since it is smaller than the sum of its proper divisors (10154792).

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

9440728 is a wasteful number, since it uses less digits than its factorization.

9440728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599 (or 1595 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 9440728 is about 3072.5767687724. The cubic root of 9440728 is about 211.3497937756.

The spelling of 9440728 in words is "nine million, four hundred forty thousand, seven hundred twenty-eight".