128163 has 16 divisors (see below), whose sum is σ = 207360. Its totient is φ = 68736.

The previous prime is 128159. The next prime is 128173. The reversal of 128163 is 361821.

It is a Cunningham number, because it is equal to 358²-1.

It is not a de Polignac number, because 128163 - 2² = 128159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (128113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178 + ... + 536.

It is an arithmetic number, because the mean of its divisors is an integer number (12960).

2¹²⁸¹⁶³ is an apocalyptic number.

128163 is a deficient number, since it is larger than the sum of its proper divisors (79197).

128163 is a wasteful number, since it uses less digits than its factorization.

128163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386.

The product of its digits is 288, while the sum is 21.

The square root of 128163 is about 357.9986033492. The cubic root of 128163 is about 50.4182253311.

Adding to 128163 its reverse (361821), we get a palindrome (489984).

The spelling of 128163 in words is "one hundred twenty-eight thousand, one hundred sixty-three".