It is a happy number.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a d-powerful number, because it can be written as 25 + 83 + 4 + 213 + 39 .
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 28423.
It is a congruent number.
228423 is an apocalyptic number.
28423 is an equidigital number, since it uses as much as digits as its factorization.
28423 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 704.
The square root of 28423 is about 168.5912215983. The cubic root of 28423 is about 30.5180400309.
The spelling of 28423 in words is "twenty-eight thousand, four hundred twenty-three".