288 (number)
288 is a pentagonal pyramidal number, is 4 superfactorial since 288 = 1!·2!·3!·4!
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| Cardinal | two hundred eighty-eight | |||
| Ordinal | 288th (two hundred eighty-eighth) | |||
| Factorization | 25 × 32 | |||
| Greek numeral | ΣΠΗ´ | |||
| Roman numeral | CCLXXXVIII | |||
| Binary | 1001000002 | |||
| Ternary | 1012003 | |||
| Octal | 4408 | |||
| Duodecimal | 20012 | |||
| Hexadecimal | 12016 | |||
288 is an untouchable number, a Harshad number in base 10 and base 12, an Achilles number, a 3-smooth number and a self number.
Both 288 and 289 are powerful numbers.
288 is sum of the sequence of integers 1..4 to the second tetration (i.e. , where is the hyperoperation) since 288 = 1 + 4 + 27 + 256 = 11 + 22 + 33 + 44.
288 is the number of labelled pointed rooted trees (vertebrates) with up to 4 nodes, the number of maximal directed Pseudoforests on up to 4 vertices, the number of Endofunctions for all sets with ≤ 4 points, and is two dozen sets of a dozen, thus being two gross and being 200 in base 12, often told as a pun in maths classes.
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