{{Numberرقم|number = 290| cardinal = | ordinal = | ordinal text =| numeral =290| prime = | divisor=1,2,5,10,29,58,145,290| factorization =2×5×29|roman =CCXC | greek prefix = | latin prefix = |bin =| oct =| duo =| hex =}}
'''290''' هو [[عدد صحيح]] <ref>{{MathWorldماثوورلد|title=Natural Number|id=NaturalNumber}}</ref><ref>{{Citationاستشهاد| المسار = http://www.merriam-webster.com/dictionary/natural%20number| العنوان = natural number| العمل = Merriam-Webster.com| الناشر = [[ميريام وبستر]]| تاريخ الوصول = 4 October 2014|مسار أرشيف= https://web.archive.org/web/20191218054820/https://www.merriam-webster.com/dictionary/natural%20number|تاريخ أرشيف=2019-12-18}}
</ref><ref>{{harvtxtHarvard citation text|Carothers|2000}} says: "ℕ is the set of natural numbers (positive integers)" (p. 3)</ref><ref name="Mac Lane & Birkhoff 1999 p15">{{harvtxtHarvard citation text|Mac Lane|Birkhoff|1999}} include zero in the natural numbers: "Intuitively, the set {{math|ℕ {{=}} {{mset|0, 1, 2, ...}}}} of all "natural numbers" may be described as follows: {{math|ℕ}} contains an "initial" number 0; ...". They follow that with their version of the Peano Postulates. (p. 15)</ref> طبيعي بين [[289 (عدد)|289]] و [[291 (عدد)|291]]
