270 (number)

In mathematics

• 270 is a harmonic divisor number
• 270 is the fourth number that is divisible by its average integer divisor
• 270 is a practical number, by the second definition
• The sum of the coprime counts for the first 29 integers is 270
• 270 is a sparsely totient number, the largest integer with 72 as its totient
• Given 6 elements, there are 270 square permutations
• 10! has 270 divisors
• 270 is a Harshad number in base 10
• 270 is the smallest positive integer that has divisors ending by digits 1, 2, …, 9.

  In other fields

• The year 270 BC
• The year 270 AD
• The caliber of the.270 Winchester rifle
• The number of U.S. Electoral College votes needed to be elected President of the United States
• The average number of days in human pregnancy
• A pseudonym for Konami musician Naoki Maeda

  Integers from 271 to 279

271

272

273

274

275

276

277

278

279