284 (عدد)

← 283 284 285 →
← 200 210 220 230 240 250 260 270 280 290 → قائمة الأعداد; الأعداد الصحيحة; ← 0 100 200 300 400 500 600 700 800 900 →
كمي	صفر
ترتيبي	284; (صفر)
التحليل لعوامل	22× 71
القواسم	1, 2, 4, 71, 142, 284
العدد اليوناني	ΣΠΔ´
العدد الروماني	CCLXXXIV
ثنائي	1000111002
ثلاثي	1011123
رباعي	101304
خماسي	21145
سداسي	11526
ثماني	4348
اثنا عشري	1B812
ستة عشري	11C16
عشريني	E420
أساس 36	7W36

284 is the natural number following 283 and preceding 285.

في الرياضيات

284 is an even composite number with 2 distinct prime factors.^[1]
284 is in the first pair of amicable numbers with 220. That means that the sum of the proper divisors are the same between the two numbers.^[2]
284 can be written as a sum of exactly 4 nonzero perfect squares.^[3]
284 is a nontotient number which are numbers where phi(x) equaling that number has no solution.^[4]
284 is a number that is the nth prime plus n. It is the 51st prime number (233) plus 51.^[5]