20043117 has 24 divisors (see below), whose sum is σ = 30105504. Its totient is φ = 12839904.

The previous prime is 20043083. The next prime is 20043151. The reversal of 20043117 is 71134002.

It is an interprime number because it is at equal distance from previous prime (20043083) and next prime (20043151).

It is not a de Polignac number, because 20043117 - 2⁶ = 20043053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20043117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25543 + ... + 26315.

It is an arithmetic number, because the mean of its divisors is an integer number (1254396).

Almost surely, 2^20043117 is an apocalyptic number.

It is an amenable number.

20043117 is a deficient number, since it is larger than the sum of its proper divisors (10062387).

20043117 is a wasteful number, since it uses less digits than its factorization.

20043117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20043117 is about 4476.9539868084. The cubic root of 20043117 is about 271.6366842259.

Adding to 20043117 its reverse (71134002), we get a palindrome (91177119).

The spelling of 20043117 in words is "twenty million, forty-three thousand, one hundred seventeen".