What is 18 (number)?
{{Infobox number | number = 18 | divisors = 1, 2, 3, 6, 9, 18 }} {{wiktionary|eighteen}} {{dablink|This article is about the number eighteen. For the year, see [[18]].}} '''18''' ('''eighteen''') is a [[number]]. It comes between [[seventeen]] and [[nineteen]], and is an [[even number]]. It is divisible by [[One|1]], [[Two|2]], [[Three|3]], [[Six|6]], [[Nine|9]] and [[Eighteen|18]]. In most countries it is the age of majority, age of consent, and voting age. In Roman numerals, 18 is written as '''XVIII'''. The number 18 has many multiples such as: 36, 54, 72, 90, 108, and so on. The prime factorization of 18 is 3x3x2 in expanded form, and 2x3² in factored form. [[Category:Integers]]