20236117 has 4 divisors (see below), whose sum is σ = 22075776. Its totient is φ = 18396460.

The previous prime is 20236091. The next prime is 20236123. The reversal of 20236117 is 71163202.

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 20236117 - 2⁷ = 20235989 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 (20236127) 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, 919813 + ... + 919834.

It is an arithmetic number, because the mean of its divisors is an integer number (5518944).

Almost surely, 2^20236117 is an apocalyptic number.

It is an amenable number.

20236117 is a deficient number, since it is larger than the sum of its proper divisors (1839659).

20236117 is a wasteful number, since it uses less digits than its factorization.

20236117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839658.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 20236117 is about 4498.4571799674. The cubic root of 20236117 is about 272.5057855854.

Adding to 20236117 its reverse (71163202), we get a palindrome (91399319).

The spelling of 20236117 in words is "twenty million, two hundred thirty-six thousand, one hundred seventeen".