In Mathematics
- 270 is a harmonic divisor number
- 270 is the fourth number that is divisible by its average integer divisor (sequence A007340 in OEIS)
- 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 A003483
- 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.
Read more about this topic: 270 (number)
Famous quotes containing the word mathematics:
“It is a monstrous thing to force a child to learn Latin or Greek or mathematics on the ground that they are an indispensable gymnastic for the mental powers. It would be monstrous even if it were true.”
—George Bernard Shaw (1856–1950)
“In mathematics he was greater
Than Tycho Brahe, or Erra Pater:
For he, by geometric scale,
Could take the size of pots of ale;
Resolve, by sines and tangents straight,
If bread and butter wanted weight;
And wisely tell what hour o’ th’ day
The clock doth strike, by algebra.”
—Samuel Butler (1612–1680)