9618728 has 16 divisors (see below), whose sum is σ = 20611680. Its totient is φ = 4122288.

The previous prime is 9618727. The next prime is 9618733. The reversal of 9618728 is 8278169.

It is not an unprimeable number, because it can be changed into a prime (9618727) 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, 85826 + ... + 85937.

It is an arithmetic number, because the mean of its divisors is an integer number (1288230).

Almost surely, 2^9618728 is an apocalyptic number.

It is an amenable number.

9618728 is an abundant number, since it is smaller than the sum of its proper divisors (10992952).

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

9618728 is a wasteful number, since it uses less digits than its factorization.

9618728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171776 (or 171772 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 9618728 is about 3101.4074224455. The cubic root of 9618728 is about 212.6698287130.

The spelling of 9618728 in words is "nine million, six hundred eighteen thousand, seven hundred twenty-eight".