28
Natural number
Also known as twenty eight · twenty-eight · 28*1 · 1*28 · number 28 · ㉘
- Instance of
- positive integer
- , perfect number
- , triangular number
- +5 more
Overview
All data
56 statements · 4% with external sources · numbers in brackets are citations
- Code
- ௨௰௮ encoding: Tamil number notation using ௰, ௱, ௲
- ௨௮ encoding: Tamil number notation using ASCII 0
- XXVIII encoding: Roman numeral in basic notation
- 𒎙𒐜 encoding: Babylonian numerals
- 11100 encoding: binary numeral system
- 1001 encoding: ternary numeral system
- 130 encoding: quaternary numeral system
- 103 encoding: quinary
Show 18 moreShow less
- 44 encoding: senary
- 40 encoding: septenary
- 31 encoding: nonary
- 34 encoding: octal
- 28 encoding: decimal
- 26 encoding: undecimal
- 24 encoding: duodecimal
- 22 encoding: base 13
- 20 encoding: tetradecimal
- 1D encoding: pentadecimal
- 1C encoding: hexadecimal
- 1B encoding: heptadecimal
- 1A encoding: octodecimal
- 19 encoding: enneadecimal
- 18 encoding: vigesimal
- ΚΗʹ encoding: Greek alphabetic numerals
- ൨൮ encoding: Malayalam number notation using ASCII 0
- ൨൰൮ encoding: Malayalam number notation using ൰, ൱, ൲
On other databases
11 identifiers linking 28 across the web's reference databases