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Number 128 (one hundred twenty-eight) is an even three-digits composite number and natural number following 127 and preceding 129.

Properties of the number 128

Cardinalone hundred twenty-eight
one hundred twenty-eight
Number of digits3
Sum of digits11
Product of digits16
Number parityEven
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Prime Factorization of 128

Prime factorization2 x 2 x 2 x 2 x 2 x 2 x 2
Prime factorization in exponent form27
Prime factors2
Number of distinct prime factors ω(n)1
Total number of prime factors Ω(n)7
Sum of prime factors2
Product of prime factors2
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Divisors of 128

List of proper divisors 1, 2, 4, 8, 16, 32, 64
List of all dividers1, 2, 4, 8, 16, 32, 64, 128
Number of divisors d(n)8
Sum of all divisors σ(n)255
Aliquot sum 127
128 is a deficient number , since it is larger than the sum of its proper divisors (127). Its deficiency is 1.
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Prime numbers

Is 128 a prime number?No
Is 128 a semiprime number?No
Is 128 a Chen prime number?No
Is 128 a Mersenne prime number?No
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Is 128 a Catalan number?No
Is 128 a Fibonacci number?No
Is 128 a Idoneal number?No
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Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.
128 is not a Happy number
128 is a Humble number
128 is not a Münchhausen number
128 is not a Perfect number
128 is not a Perfect square
128 is not a Palindrome
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Numeric Bases of 128

In mathematics, a base or radix of a numeral system is the number of unique digits, including zero, used to represent numbers in that system.
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Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
Square of 128 (n2)16384
Cube of 128 (n3)2097152
Square root of 12811.313708498985
Natural Logarithm (ln) of 1284.8520302639196
Decimal Logarithm (log) of 1282.1072099696479
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Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 1280.72103771050173
Cosecant of 1281.3868900134282
Cosine of 128-0.69289582192017
Secant of 128-1.4432184007529
Tangent of 128-1.0406148914329
Cotangent of 128-0.96097029576722
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Number parity

Parity is the property of an integer of whether it is even or odd.

Is 128 an Even Number?

Yes, the number 128 is an even number.

Is 128 an Odd Number?

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Ban number

In recreational mathematics, a ban number is a number that does not contain a particular letter when spelled out in English; in other words, the letter is "banned".
The spelling of 128 in words is "one hundred twenty-eight", meaning that:
128 is an aban number (a number without the letter a)
128 is not an eban number (as it contains the letter e)
128 is not an iban number (as it contains the letter i)
128 is not an oban number (as it contains the letter o)
128 is not a tban number (as it contains the letter t)
128 is not an uban number (as it contains the letter u)
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Numeral systems

How to write 128 in other number systems?
Bengali numerals১২৮
Eastern Arabic numerals١٢٨
Hieroglyphs numeralsused in Ancient Egypt𓍢𓎇𓐁
Khmer numerals១២៨
Japanese numerals百二十八
Roman numeralsCXXVIII
Thai numerals๑๒๘
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How do you say 128 in 38 different languages?
Arabicمائة و ثمانية و عشرون
Croatiansto dvadeset i osam
Czechsto dvacet osm
Danish et hundrede otte og tyve
Estonianalafa ɖeka blaeve vɔ enyi
Filipinoisáng daán at dalawáng pû’t waló
Frenchcent vingt-huit
Greekεκατόν είκοσι οκτώ
Hebrewמאה עשרים ושמונה
Hindiएक सौ अट्ठाईस
Icelandiceitt­hundrað og tuttugu og átta
Indonesianseratus dua puluh delapan
Latviansimt divdesmit astoņi
Lithuanianšimtas dvidešimt aštuoni
Norwegianhundre og tjue­åtte
Persianصد و بیست و هشت
Polishsto dwadzieścia osiem
Portuguesecento e vinte e oito
Romanianuna sută douăzeci şi opt
Russianсто двадцать восемь
Serbianсто двадесет и осам
Slovakjedna­sto dvadsať­osem
Slovenesto dvaset osem
Spanish ciento veintiocho
Swahilimia moja na ishirini na nane
Turkishyüz yirmi sekiz
Ukrainianсто двадцять вісім
Vietnamesemột trăm hai mươi tám
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Number 128 reversed821
ASCII Code128
Unicode CharacterU+0080
Hexadecimal color (shorthand)#112288
Unix TimestampThu, 01 Jan 1970 00:02:08 +0000
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