20238117 has 4 divisors (see below), whose sum is σ = 26984160. Its totient is φ = 13492076.

The previous prime is 20238089. The next prime is 20238131. The reversal of 20238117 is 71183202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20238117 - 2⁷ = 20237989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20238017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3373017 + ... + 3373022.

It is an arithmetic number, because the mean of its divisors is an integer number (6746040).

Almost surely, 2^20238117 is an apocalyptic number.

It is an amenable number.

20238117 is a deficient number, since it is larger than the sum of its proper divisors (6746043).

20238117 is an equidigital number, since it uses as much as digits as its factorization.

20238117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6746042.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 20238117 is about 4498.6794729120. The cubic root of 20238117 is about 272.5147628284.

The spelling of 20238117 in words is "twenty million, two hundred thirty-eight thousand, one hundred seventeen".