9478728 has 64 divisors (see below), whose sum is σ = 30096000. Its totient is φ = 2707776.

The previous prime is 9478727. The next prime is 9478751. The reversal of 9478728 is 8278749.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (9478727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1623 + ... + 4646.

It is an arithmetic number, because the mean of its divisors is an integer number (470250).

Almost surely, 2^9478728 is an apocalyptic number.

It is an amenable number.

9478728 is an abundant number, since it is smaller than the sum of its proper divisors (20617272).

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

9478728 is a wasteful number, since it uses less digits than its factorization.

9478728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6291 (or 6281 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 9478728 is about 3078.7542935415. The cubic root of 9478728 is about 211.6329831149.

The spelling of 9478728 in words is "nine million, four hundred seventy-eight thousand, seven hundred twenty-eight".