216118 has 16 divisors (see below), whose sum is σ = 380160. Its totient is φ = 90216.

The previous prime is 216113. The next prime is 216119. The reversal of 216118 is 811612.

216118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 216095 and 216104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216113) 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, 423 + ... + 781.

It is an arithmetic number, because the mean of its divisors is an integer number (23760).

2²¹⁶¹¹⁸ is an apocalyptic number.

216118 is a deficient number, since it is larger than the sum of its proper divisors (164042).

216118 is a wasteful number, since it uses less digits than its factorization.

216118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411.

The product of its digits is 96, while the sum is 19.

The square root of 216118 is about 464.8849319993. The cubic root of 216118 is about 60.0109239369.

The spelling of 216118 in words is "two hundred sixteen thousand, one hundred eighteen".