20494 is nontrivially palindromic in base 11.
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is an unprimeable number.
220494 is an apocalyptic number.
20494 is a wasteful number, since it uses less digits than its factorization.
20494 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10249.
The square root of 20494 is about 143.1572561905. The cubic root of 20494 is about 27.3658480141.
Adding to 20494 its reverse (49402), we get a palindrome (69896).
The spelling of 20494 in words is "twenty thousand, four hundred ninety-four".