28163 has 2 divisors, whose sum is σ = 28164. Its totient is φ = 28162.
The previous prime is 28151. The next prime is 28181. The reversal of 28163 is 36182.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 28163 - 26 = 28099 is a prime.
It is a nialpdrome in base 13.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28163.
It is not a weakly prime, because it can be changed into another prime (28123) 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 as a sum of consecutive naturals, namely, 14081 + 14082.
It is an arithmetic number, because the mean of its divisors is an integer number (14082).
228163 is an apocalyptic number.
28163 is a deficient number, since it is larger than the sum of its proper divisors (1).
28163 is an equidigital number, since it uses as much as digits as its factorization.
28163 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 288, while the sum is 20.
The square root of 28163 is about 167.8183541809. The cubic root of 28163 is about 30.4247000319.
It can be divided in two parts, 2816 and 3, that multiplied together give a palindrome (8448).
The spelling of 28163 in words is "twenty-eight thousand, one hundred sixty-three".
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