270 (number)

From HandWiki

Short description: Natural number

270

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List of numbers — Integers

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two hundred seventy

270th
(two hundred seventieth)

2 × 3³ × 5

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

ΣΟ´

CCLXX

100001110₂

101000₃

10032₄

2040₅

1130₆

416₈

1A6₁₂

10E₁₆

DA₂₀

7I₃₆

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 $27 0^{\circ} = \frac{3 π}{2}$ radians.
$270 + 1$ and $270 - 1$ are both prime numbers, making 270 surrounded by twin primes.^[4]

References

↑ Sloane, N. J. A., ed. "Sequence A001599 (Harmonic or Ore numbers)". OEIS Foundation. https://oeis.org/A001599. Retrieved 2016-05-28.
↑ Sloane, N. J. A., ed. "Sequence A007340". OEIS Foundation. https://oeis.org/A007340.
↑ "270 degrees". https://www.geogebra.org/m/Ky3pa3NJ.
↑ "Twin prime numbers". https://mathworld.wolfram.com/TwinPrimes.html.

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Integers