28143 has 12 divisors (see below), whose sum is σ = 42120. Its totient is φ = 18096.

The previous prime is 28123. The next prime is 28151. The reversal of 28143 is 34182.

It is a happy number.

It is not a de Polignac number, because 28143 - 2⁵ = 28111 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28143.

It is not an unprimeable number, because it can be changed into a prime (28123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 448 + ... + 506.

It is an arithmetic number, because the mean of its divisors is an integer number (3510).

2²⁸¹⁴³ is an apocalyptic number.

28143 is a deficient number, since it is larger than the sum of its proper divisors (13977).

28143 is a wasteful number, since it uses less digits than its factorization.

28143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 115 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 28143 is about 167.7587553602. The cubic root of 28143 is about 30.4174962764.

It can be divided in two parts, 281 and 43, that added together give a square (324 = 18²).

The spelling of 28143 in words is "twenty-eight thousand, one hundred forty-three".