As character names:

U+2A04 N-ARY UNION OPERATOR WITH PLUS character (⨄)

As raw characters:

⨄

As a string of HTML entities:

⨄

Decoder output:

Byte number 1 is decimal 226, hex 0xE2, octal \342, binary 11100010
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 168, hex 0xA8, octal \250, binary 10101000
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 132, hex 0x84, octal \204, binary 10000100
This is continuation byte 2, expecting 0 more.

U+2A04	N-ARY UNION OPERATOR WITH PLUS
	x (multiset union - 228E)