284 (number)

Two hundred eighty-four (284, CCLXXXIV) is the natural number following 283 and preceding 285.

Cardinal Two hundred [and] eighty-four
Ordinal 284th
Factorization 2^2 \cdot 71
Roman numeral CCLXXXIV
Binary 100011100
Hexadecimal 11C

Its divisors are 1, 2, 4, 71, and 142, adding up to 220, in turn, the divisors of 220 add up to 284, making the two a pair of amicable numbers.[1]

There is no answer to the equation φ(x) = 284, making 284 a nontotient.

In other fields

284 degrees Celsius is the flash point of paper.

See also the year 284 and List of highways numbered 284.

References

  1. ^ Higgins, Peter (2008). Number Story: From Counting to Cryptography. New York: Copernicus. p. 61. ISBN 978-1-84800-000-1.