82118 has 8 divisors (see below), whose sum is σ = 129720. Its totient is φ = 38880.

The previous prime is 82073. The next prime is 82129. The reversal of 82118 is 81128.

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

It is a self number, because there is not a number n which added to its sum of digits gives 82118.

It is a congruent number.

It is an unprimeable number.

82118 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043 + ... + 1118.

It is an arithmetic number, because the mean of its divisors is an integer number (16215).

2⁸²¹¹⁸ is an apocalyptic number.

82118 is a deficient number, since it is larger than the sum of its proper divisors (47602).

82118 is a wasteful number, since it uses less digits than its factorization.

82118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182.

The product of its digits is 128, while the sum is 20.

The square root of 82118 is about 286.5623841330. The cubic root of 82118 is about 43.4656442523.

Subtracting from 82118 its reverse (81128), we obtain a triangular number (990 = T₄₄).

The spelling of 82118 in words is "eighty-two thousand, one hundred eighteen".