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Eighty-four
Eighty-four (84, LXXXIV) is the natural number following eighty-three and preceeding eighty-five. It's the sum of the first seven triangular numbers, as well as the sum of a twin prime (41 + 43).
- Hexadecimal: 54
- Binary: 01010100
- Factors: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84.
- Factorization:
- Ordinal number: eighty-fourth
84 is also
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