20300197 has 4 divisors (see below), whose sum is σ = 20312460. Its totient is φ = 20287936.

The previous prime is 20300179. The next prime is 20300201. The reversal of 20300197 is 79100302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11621281 + 8678916 = 3409^2 + 2946^2 .

It is a cyclic number.

It is not a de Polignac number, because 20300197 - 2¹⁹ = 19775909 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 (20300117) 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, 3172 + ... + 7117.

It is an arithmetic number, because the mean of its divisors is an integer number (5078115).

Almost surely, 2^20300197 is an apocalyptic number.

It is an amenable number.

20300197 is a deficient number, since it is larger than the sum of its proper divisors (12263).

20300197 is a wasteful number, since it uses less digits than its factorization.

20300197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12262.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 20300197 is about 4505.5739922900. The cubic root of 20300197 is about 272.7931228433.

Adding to 20300197 its reverse (79100302), we get a palindrome (99400499).

The spelling of 20300197 in words is "twenty million, three hundred thousand, one hundred ninety-seven".