278 (number)

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.