20300 has 36 divisors (see below), whose sum is σ = 52080. Its totient is φ = 6720.

The previous prime is 20297. The next prime is 20323. The reversal of 20300 is 302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (5).

20300 is an undulating number in base 12.

It is a zygodrome in base 5.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 686 + ... + 714.

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).

20300 is an abundant number, since it is smaller than the sum of its proper divisors (31780).

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 sum of its prime factors is 50 (or 43 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 5.

The square root of 20300 is about 142.4780684878. The cubic root of 20300 is about 27.2792240415.

Adding to 20300 its reverse (302), we get a palindrome (20602).

The spelling of 20300 in words is "twenty thousand, three hundred", and thus it is an iban number.