20198303 has 4 divisors (see below), whose sum is σ = 20224080. Its totient is φ = 20172528.

The previous prime is 20198287. The next prime is 20198327. The reversal of 20198303 is 30389102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20198303 - 2⁴ = 20198287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20198603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11675 + ... + 13292.

It is an arithmetic number, because the mean of its divisors is an integer number (5056020).

Almost surely, 2^20198303 is an apocalyptic number.

20198303 is a deficient number, since it is larger than the sum of its proper divisors (25777).

20198303 is an equidigital number, since it uses as much as digits as its factorization.

20198303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25776.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 20198303 is about 4494.2522181115. The cubic root of 20198303 is about 272.3359414246.

The spelling of 20198303 in words is "twenty million, one hundred ninety-eight thousand, three hundred three".