Adding to 20300 its reverse (302), we get a palindrome (20602).
It is a happy number.
20300 is an undulating number in base 12.
It is a zygodrome in base 5.
It is an unprimeable number.
20300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 20300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26040).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20300 is a wasteful number, since it uses less digits than its factorization.
20300 is an evil number, because the sum of its binary digits is even.
The square root of 20300 is about 142.4780684878. The cubic root of 20300 is about 27.2792240415.
The spelling of 20300 in words is "twenty thousand, three hundred", and thus it is an iban number.