228163 has 4 divisors (see below), whose sum is σ = 245728. Its totient is φ = 210600.

The previous prime is 228139. The next prime is 228181. The reversal of 228163 is 361822.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 228163 - 2⁵ = 228131 is a prime.

It is a super-3 number, since 3×228163³ = 35633371060580241, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8763 + ... + 8788.

It is an arithmetic number, because the mean of its divisors is an integer number (61432).

2²²⁸¹⁶³ is an apocalyptic number.

228163 is a deficient number, since it is larger than the sum of its proper divisors (17565).

228163 is a wasteful number, since it uses less digits than its factorization.

228163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17564.

The product of its digits is 576, while the sum is 22.

The square root of 228163 is about 477.6641079252. The cubic root of 228163 is about 61.1057022455.

Adding to 228163 its reverse (361822), we get a palindrome (589985).

The spelling of 228163 in words is "two hundred twenty-eight thousand, one hundred sixty-three".