Search a number
-
+
8018 = 219211
BaseRepresentation
bin1111101010010
3101222222
41331102
5224033
6101042
732243
oct17522
911888
108018
11602a
124782
13385a
142cca
152598
hex1f52

8018 has 8 divisors (see below), whose sum is σ = 12720. Its totient is φ = 3780.

The previous prime is 8017. The next prime is 8039. The reversal of 8018 is 8108.

It is a happy number.

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

It is an Ulam number.

8018 is a modest number, since divided by 18 gives 8 as remainder.

It is a plaindrome in base 9.

It is a zygodrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 7987 and 8005.

It is not an unprimeable number, because it can be changed into a prime (8011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68 + ... + 143.

It is an arithmetic number, because the mean of its divisors is an integer number (1590).

28018 is an apocalyptic number.

8018 is a deficient number, since it is larger than the sum of its proper divisors (4702).

8018 is a wasteful number, since it uses less digits than its factorization.

8018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 8018 is about 89.5432856221. The cubic root of 8018 is about 20.0149887640.

Subtracting from 8018 its sum of digits (17), we obtain a triangular number (8001 = T126).

The spelling of 8018 in words is "eight thousand, eighteen".

Divisors: 1 2 19 38 211 422 4009 8018