20298 has 16 divisors (see below), whose sum is σ = 43200. Its totient is φ = 6336.

The previous prime is 20297. The next prime is 20323. The reversal of 20298 is 89202.

20298 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3 + ... + 201.

It is an arithmetic number, because the mean of its divisors is an integer number (2700).

2²⁰²⁹⁸ is an apocalyptic number.

20298 is an abundant number, since it is smaller than the sum of its proper divisors (22902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21600).

20298 is a wasteful number, since it uses less digits than its factorization.

20298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20298 is about 142.4710496908. The cubic root of 20298 is about 27.2783281426.

It can be divided in two parts, 202 and 98, that added together give a triangular number (300 = T₂₄).

The spelling of 20298 in words is "twenty thousand, two hundred ninety-eight".