Number

-2

Negative
Even
1 digit

-2 is an even 1-digit integer and the negative of 2. It has 2 divisors and a digital root of 2.

Number properties

ParityEvendivisible by 2

SignNegative

Absolute value2

Digit count1

Digit sum2

Digital root2repeated digit sum

PalindromicYesreads the same backwards

Factors & divisors

Prime factorisation−1 × 2

Distinct prime factors12

Number of divisors2

Sum of divisors σ(n)3

SquarefreeYesno repeated prime factor

All divisors1, 22 in total

Arithmetic

Previous number-3

Next number-1

Double-4

Half-1

Square4

Cube-8

Cube root-1.25992105≈

Negation2

Reciprocal-0.5≈

Representations

Decimal-2

Binary102 bits

Octal2

Hexadecimal2

Base 362

In wordsminus two

Ordinalminus second

Scientific notation-2 × 10^0

Engineering notation-2

Nearest landmarks

Next prime2+4

Nearest square below1

Nearest square above4

Powers & multiples

-2 to the power 24

-2 to the power 3-8

-2 to the power 416

-2 to the power 5-32

First ten multiples-2, -4, -6, -8, -10, -12, -14, -16, -18, -20

Powers of twoExactly 2^1

Divisibility tests

Divisible by 2Yes

Divisible by 3No, remainder 2

Divisible by 4No, remainder 2

Divisible by 5No, remainder 2

Divisible by 6No, remainder 2

Divisible by 7No, remainder 2

Divisible by 8No, remainder 2

Divisible by 9No, remainder 2

Divisible by 10No, remainder 2

Divisible by 11No, remainder 2

Divisible by 12No, remainder 2

Divisible by 100No, remainder 2

As a percentage & fraction

As a percentage-200%

-2% as a decimal-0.02

-2% of 100-2

-2% of 1,000-20

As a fraction of 100-2/100

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Neighbouring numbers

Derived from -2

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