278 (number)

Short description: Natural number

← 277 278 279 →
← 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 seventy-eight
Ordinal	278th (two hundred seventy-eighth)
Factorization	2 × 139
Divisors	1, 2, 139, 278
Greek numeral	ΣΟΗ´
Roman numeral	CCLXXVIII
Binary	1000101102
Ternary	1010223
Quaternary	101124
Quinary	21035
Senary	11426
Octal	4268
Duodecimal	1B212
Hexadecimal	11616
Vigesimal	DI20
Base 36	7Q36

278 (two hundred [and] seventy-eight) is the natural number following 277 and preceding 279.

In mathematics

• 278 is an even composite number with 2 prime factors.
• 278 is equal to Φ(30). It is the sum of the totient function.
• 278 is a nontotient number which means that it is an even number that doesn't follow Euler's totient function.
• 278 is the smallest semiprime number that has an anagram that is also semiprime. The other number is 287.

World Records

• On October 29, 2011, April Mathis lifted the heaviest squat weight by a female at 278 kg in Orlando, Florida.
• On November 10, 1993, Tom Rodden received the Guinness World Record for shaving 278 people in one hour.
• On March 25, 2000, in Meadowhall Center, there were 278 human mannequins in the shopping center. They were in a total of 114 stores.
• On December 5, 2006, James Cripps received the Guinness World Record for the highest score in backwards bowling. The score was 278.

Other fields

• The calendar years 278 AD and 278 BC.
• 278 is the number of several highways in Canada , Japan , and the United States .
• 278 Paulina is an asteroid in the asteroid belt. It was discovered by Johann Palisa in Vienna.