20116 has 12 divisors (see below), whose sum is σ = 36288. Its totient is φ = 9752.

The previous prime is 20113. The next prime is 20117. The reversal of 20116 is 61102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135 + ... + 241.

It is an arithmetic number, because the mean of its divisors is an integer number (3024).

2²⁰¹¹⁶ is an apocalyptic number.

It is an amenable number.

20116 is a deficient number, since it is larger than the sum of its proper divisors (16172).

20116 is a wasteful number, since it uses less digits than its factorization.

20116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 20116 is about 141.8308852119. The cubic root of 20116 is about 27.1965537733.

Adding to 20116 its reverse (61102), we get a palindrome (81218).

It can be divided in two parts, 20 and 116, that added together give a triangular number (136 = T₁₆).

The spelling of 20116 in words is "twenty thousand, one hundred sixteen".