270 (number) explained

Number:	270
Divisor:	1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 270

270 (two hundred [and] seventy) is the natural number following 269 and preceding 271.

In mathematics

• 270 is a harmonic divisor number.^[1]
• 270 is the fourth number that is divisible by its average integer divisor.^[2]
• 270 degrees is equal to three-fourths of a turn.^[3] This also means that

270 ^{\circ = (3 \pi)/(2)} radians.^[4] 270+1 and 270-1 are both prime numbers, making 270 surrounded by twin primes.^[5]

• 270 is the number of divisors that

10 ! (a factorial) has.^[6]

In politics

• In the United States electoral college, 270 is the minimum number of electors, out of 538, required for a presidential candidate to be elected to the presidency.^[7]

In other fields

• Area code 270 covers Western Kentucky.^[8]

Notes and References

1. A001599. Harmonic or Ore numbers. 2016-05-28.
2. A007340.
3. Web site: 270 degrees. www.geogebra.org.
4. Web site: Intro to Trig . 27 February 2024 . blogs.nvcc.edu.
5. Web site: Twin prime numbers. mathworld.wolfram.com.
6. A027423. Number of divisors of n!..
7. Web site: 2019-08-27 . What is the Electoral College? . 2024-11-05 . National Archives . en.
8. Web site: 270 Area Code - USA.com™ . 2024-11-05 . www.usa.com.