It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a self number, because there is not a number n which added to its sum of digits gives 20582.
It is a congruent number.
It is an unprimeable number.
20582 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
220582 is an apocalyptic number.
20582 is a wasteful number, since it uses less digits than its factorization.
20582 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 294.
The square root of 20582 is about 143.4642812689. The cubic root of 20582 is about 27.4049611845.
The spelling of 20582 in words is "twenty thousand, five hundred eighty-two".