This character is a Letter Number and is mainly used in the Han script. The codepoint has the numeric value 8.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it is written from left to right. When changing direction it is not mirrored. U+3028 offers a line break opportunity at its position, except in some numeric contexts.
The Wikipedia has the following information about this codepoint:
The Suzhou numerals, also known as Sūzhōu mǎzi (蘇州碼子), is a numeral system used in China before the introduction of Hindu numerals. The Suzhou numerals are also known as huāmǎ (花碼), cǎomǎ (草碼), jīngzǐmǎ (菁仔碼), fānzǐmǎ (番仔碼) and shāngmǎ (商碼).
Representations
System
Representation (click value to copy)
Nº
12328
UTF-8
E3 80 A8
UTF-16
30 28
UTF-32
00 00 30 28
URL-Quoted
%E3%80%A8
HTML hex reference
〨
Wrong windows-1252 Mojibake
〨
Encoding: BIG5 (hex bytes)
A2 CA
Encoding: BIG5HKSCS (hex bytes)
A2 CA
Encoding: CP950 (hex bytes)
A2 CA
Encoding: GBK (hex bytes)
A9 47
Encoding: GB18030 (hex bytes)
A9 47
Adobe Glyph List
eighthangzhou
RFC 5137
\u'3028'
Bash and Zsh inside echo -e
\u3028
C and C++
\u3028
C#
\u3028
CSS
\003028
Excel
=UNICHAR(12328)
Go
\u3028
JavaScript
\u3028
Modern JavaScript since ES6
\u{3028}
JSON
\u3028
Java
\u3028
Lua
\u{3028}
Matlab
char(12328)
Perl
"\x{3028}"
PHP
\u{3028}
PostgreSQL
U&'\3028'
PowerShell
`u{3028}
Python
\u3028
Ruby
\u{3028}
Rust
\u{3028}
Click the star button next to each label to set this representation as favorite or remove it from the favorites. Favorites will be shown initially. (Favorites are stored locally on your computer and never sent over the internet.)