128 (number)

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This page discusses the number 128. For the year, see 128.

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128 is the natural number following 127 and preceding 129.

List of numbers — Integers << 120+ 121 122 123 124 125 126 127 128 129 >>
Cardinal	One hundred [and] twenty-eight
Ordinal	128th
Factorization
Roman numeral	CXXVIII
Binary	10000000
Hexadecimal	80

One hundred twenty-eight is the largest number which can not be expressed as the sum of any number of distinct squares.

One hundred twenty-eight is also:

• The size, in bits, of certain integer data types, used in computer representations of numbers.
• The number of sons of Anathoth at the Census of men of Israel upon return from exile (Holy Bible, Ezra 2:23). Also, the number of singers, sons of Asaph (Ezra 2:41).
• In megabytes, a common size for flash disks and memory cards.
• The number of musical instruments specified in General MIDI. Sometimes they are numbered 0 to 127 and sometimes they are numbered 1 to 128.