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2

Number 2 (two) is an even digit prime number and natural number following 1 and preceding 3.

Properties of the number 2

Nominal2
Cardinaltwo
Ordinal2nd
Number of digits1
Sum of digits2
Product of digits2
Number parityEven
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Prime Factorization of 2

Prime factorization2
Prime factors2
Number of distinct prime factors ω(n)1
Total number of prime factors Ω(n)1
Sum of prime factors2
Product of prime factors2
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Divisors of 2

List of proper divisors 1
List of all dividers1, 2
Number of divisors d(n)2
Sum of all divisors σ(n)3
Aliquot sum 1
2 is a deficient number , since it is larger than the sum of its proper divisors (1). Its deficiency is 1.
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Prime numbers

Is 2 a prime number?Yes
Is 2 a semiprime number?No
Is 2 a Chen prime number?Yes
Is 2 a Mersenne prime number?Yes: M0
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Sequences

Is 2 a Catalan number?Yes: C2
Is 2 a Fibonacci number?Yes
Is 2 a Idoneal number?Yes: I1
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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.
2 is not a Happy number
2 is a Humble number
2 is not a Münchhausen number
2 is not a Perfect number
2 is not a Perfect square
2 is a Palindrome
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Numeric Bases of 2

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.
BaseSystemValue
2Binary102
3Ternary23
4Quaternary24
5Quinary25
6Senary26
7Septenary27
8Octal28
9Nonary29
10Decimal2
12Duodecimal212
16Hexadecimal216
20Vigesimal220
36Base36236
60Sexagesimal260
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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 2 (n2)4
Cube of 2 (n3)8
Square root of 21.4142135623731
Natural Logarithm (ln) of 20.69314718055995
Decimal Logarithm (log) of 20.30102999566398
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Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 20.90929742682568
Cosecant of 21.0997501702946
Cosine of 2-0.41614683654714
Secant of 2-2.4029979617224
Tangent of 2-2.1850398632615
Cotangent of 2-0.45765755436029
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Number parity

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

Is 2 an Even Number?

Yes, the number 2 is an even number.

Is 2 an Odd Number?

No
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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 2 in words is "two", meaning that:
2 is an aban number (a number without the letter a)
2 is an eban number (a number without the letter e)
2 is an iban number (a number without the letter i)
2 is not an oban number (as it contains the letter o)
2 is not a tban number (as it contains the letter t)
2 is an uban number (a number without the letter u)
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Numeral systems

How to write 2 in other number systems?
Bengali numerals
Eastern Arabic numerals٢
Hieroglyphs numeralsused in Ancient Egypt𓏻
Khmer numerals
Japanese numerals
Roman numeralsII
Thai numerals
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Translation

How do you say 2 in 38 different languages?
Arabicإثنان
Croatiandva
Czechdva
Danish to
Dutchtwee
Estonianeve
Faroesetveir
Filipinodalawá
Finnishkaksi
Frenchdeux
Greekδύο
Germanzwei
Hebrewשתיים
Hindiदो
Hungariankettő
Icelandictveir
Indonesiandua
Italiandue
Japanese
Korean
Latviandivi
Lithuaniandu
Norwegianto
Persianدو
Polishdwa
Portuguesedois
Romaniandoi
Russianдва
Serbianдва
Slovakdva
Slovenedva
Spanish dos
Swahilimbili
Swedishtvå
Thaiสอง
Turkishiki
Ukrainianдва
Vietnamesehai
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Miscellaneous

Number 2 reversed2
ASCII Code2
Unicode CharacterU+0002
Unix TimestampThu, 01 Jan 1970 00:00:02 +0000
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