9728163 has 6 divisors (see below), whose sum is σ = 14051804. Its totient is φ = 6485436.

The previous prime is 9728153. The next prime is 9728167. The reversal of 9728163 is 3618279.

It is not a de Polignac number, because 9728163 - 2⁹ = 9727651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9728167) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 540445 + ... + 540462.

Almost surely, 2^9728163 is an apocalyptic number.

9728163 is a deficient number, since it is larger than the sum of its proper divisors (4323641).

9728163 is a wasteful number, since it uses less digits than its factorization.

9728163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080913 (or 1080910 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 9728163 is about 3119.0003206156. Note that the first 3 decimals coincide. The cubic root of 9728163 is about 213.4733241868.

It can be divided in two parts, 97281 and 63, that added together give a square (97344 = 312²).

The spelling of 9728163 in words is "nine million, seven hundred twenty-eight thousand, one hundred sixty-three".