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BaseRepresentation
bin10111011110010
3121111010
42323302
5341033
6131350
750016
oct27362
917433
1012018
119036
126b56
135616
144546
153863
hex2ef2

12018 has 8 divisors (see below), whose sum is σ = 24048. Its totient is φ = 4004.

The previous prime is 12011. The next prime is 12037. The reversal of 12018 is 81021.

It is a happy number.

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

12018 is a modest number, since divided by 18 gives 12 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 11994 and 12012.

It is not an unprimeable number, because it can be changed into a prime (12011) 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, 996 + ... + 1007.

It is an arithmetic number, because the mean of its divisors is an integer number (3006).

12018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12024).

12018 is a wasteful number, since it uses less digits than its factorization.

12018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 12018 is about 109.6266390984. The cubic root of 12018 is about 22.9057262747.

Adding to 12018 its reverse (81021), we get a palindrome (93039).

The spelling of 12018 in words is "twelve thousand, eighteen".

Divisors: 1 2 3 6 2003 4006 6009 12018