- 270 (number)
270 is the
natural number following 269 and preceding 271.It may also refer to:
In mathematics:
*270 is aharmonic divisor number
*270 is the fourth number that is divisible by its average integer divisor OEIS|id=A007340
*270 is apractical number , by the second definition
*The sum of thecoprime counts for the first 29 integers is 270
*270 is asparsely totient number , the largest integer with 72 as its totient
*Given 6 elements, there are 270 square permutations OEIS2C|id=A003483
*10! has 270divisor s
*270 is aHarshad number in base 10In other fields:
*The year270 BC
*The year270 AD
*The caliber of the.270 Winchester rifle
*The number of U.S. Electoral College votes needed to bePresident of the United States
*The average amount of days in humanpregnancy
*A pseudonym for Konami musicianNaoki Maeda In other numbers:
*Two hundred [and] seventy-one (271), prime, twin prime with 269,cuban prime ,centered hexagonal number
*Two hundred [and] seventy-two (272), = 24·17, sum of four consecutive primes (61 + 67 + 71 + 73),Euler number ,primitive semiperfect number ,pronic number
*Two hundred [and] seventy-four (274), = 2·137,tribonacci number ,Smith number ,nontotient ,noncototient ,centered triangular number
*Two hundred [and] seventy-five (275), = 52·11
*Two hundred [and] seventy-six (276), = 22·3·23,triangular number ,hexagonal number ,centered pentagonal number ,untouchable number , the lowest number whosealiquot sequence has not been fully determined (as of 2006)
*Two hundred [and] seventy-seven (277),Perrin number ,self number
*Two hundred [and] seventy-eight (278), = 2·139, nontotient
*Two hundred [and] seventy-nine (279) = 32·31 Every positive integer is the sum of at most 279 eighth powers. SeeWaring's problem ee also
*
273 (number)
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