20117167 has 8 divisors (see below), whose sum is σ = 23021856. Its totient is φ = 17220192.

The previous prime is 20117161. The next prime is 20117173. The reversal of 20117167 is 76171102.

It is an interprime number because it is at equal distance from previous prime (20117161) and next prime (20117173).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20117167 - 2¹⁵ = 20084399 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 (20117161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5673 + ... + 8509.

It is an arithmetic number, because the mean of its divisors is an integer number (2877732).

Almost surely, 2^20117167 is an apocalyptic number.

20117167 is the 2837-th heptagonal number.

20117167 is a deficient number, since it is larger than the sum of its proper divisors (2904689).

20117167 is a wasteful number, since it uses less digits than its factorization.

20117167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3857.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 20117167 is about 4485.2164942174. The cubic root of 20117167 is about 271.9707968575.

Adding to 20117167 its reverse (76171102), we get a palindrome (96288269).

The spelling of 20117167 in words is "twenty million, one hundred seventeen thousand, one hundred sixty-seven".