As character names:

U+228E MULTISET UNION 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 138, hex 0x8A, octal \212, binary 10001010
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 142, hex 0x8E, octal \216, binary 10001110
This is continuation byte 2, expecting 0 more.

U+228E	MULTISET UNION
	= z notation bag addition
	x (n-ary union operator with plus - 2A04)