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7018 = 211229
BaseRepresentation
bin1101101101010
3100121221
41231222
5211033
652254
726314
oct15552
910557
107018
115300
12408a
13326b
1427b4
15212d
hex1b6a

7018 has 12 divisors (see below), whose sum is σ = 11970. Its totient is φ = 3080.

The previous prime is 7013. The next prime is 7019. The reversal of 7018 is 8107.

It can be written as a sum of positive squares in only one way, i.e., 5929 + 1089 = 77^2 + 33^2 .

It is an alternating number because its digits alternate between odd and even.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 6992 and 7010.

It is not an unprimeable number, because it can be changed into a prime (7013) by changing a digit.

7018 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 5 ways as a sum of consecutive naturals, for example, 228 + ... + 256.

27018 is an apocalyptic number.

7018 is a deficient number, since it is larger than the sum of its proper divisors (4952).

7018 is a wasteful number, since it uses less digits than its factorization.

7018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 7018 is about 83.7735041645. The cubic root of 7018 is about 19.1456943466.

Subtracting 7018 from its reverse (8107), we obtain a square (1089 = 332).

It can be divided in two parts, 70 and 18, that added together give a palindrome (88).

The spelling of 7018 in words is "seven thousand, eighteen".

Divisors: 1 2 11 22 29 58 121 242 319 638 3509 7018