284 (number)

Short description: Natural number

← 283 284 285 →
← 200 210 220 230 240 250 260 270 280 290 → List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	two hundred eighty-four
Ordinal	284th (two hundred eighty-fourth)
Factorization	22 × 71
Divisors	1, 2, 4, 71, 142, 284
Greek numeral	ΣΠΔ´
Roman numeral	CCLXXXIV
Binary	1000111002
Ternary	1011123
Quaternary	101304
Quinary	21145
Senary	11526
Octal	4348
Duodecimal	1B812
Hexadecimal	11C16
Vigesimal	E420
Base 36	7W36

284 is the natural number following 283 and preceding 285.

In mathematics

• 284 is an even composite number with 2 prime factors.
• 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.
• 284 can be written as a sum of exactly 4 nonzero perfect squares.
• 284 is a nontotient number which are numbers where phi(x) equaling that number has no solution.
• 284 is a number that is the nth prime plus n. It is the 51st prime number (233) plus 51.

World Records

• On July 3, 2010, Eduaedo Nakagawa achieved the Guinness World Record as the most prolific holder of records on Picross. He has the record for 284 of the 345 levels.
• On June 21, 2019, the largest rhythmic yoga lesson was completed in Hefei, China. It had 284 attendees.
• On October 25, 2005, Soulcalibur III was released on the PlayStation 2 with the most weapons in any video game. It had 284 weapons.
• On October 17, 2022, the students of Tabla Talim Sanstha in Ahmedabad, India completed the longest hand-drumming relay with 284 people.

Other fields

• The calendar years 284 AD and 284 BC.
• 283 is the number of several highways in Japan and the United States .
• 284 Amalia is an asteroid in the asteroid belt. It was discovered by Auguste Charlois in Nice, France and is a Ch-type asteroid.