Number
-720
- Negative
- Even
- 3 digits
-720 is an even 3-digit integer and the negative of 720. It has 30 divisors and a digital root of 9.
Number properties
ParityEvendivisible by 2
SignNegative
Absolute value720
Digit count3
Digit sum9
Digital root9repeated digit sum
PalindromicNoreads differently backwards
Factors & divisors
Prime factorisation−1 × 2^4 × 3^2 × 5
Distinct prime factors32, 3, 5
Number of divisors30
Sum of divisors σ(n)2,418
SquarefreeNohas a repeated prime factor
All divisors1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 72030 in total
Arithmetic
Representations
Decimal-720
Binary101101000010 bits
Octal1320
Hexadecimal2D0
Base 36K0
In wordsminus seven hundred and twenty
Ordinalminus seven hundred and twentieth
Scientific notation-7.2 × 10^2
Engineering notation-720
Powers & multiples
-720 to the power 2518,400
-720 to the power 3-373,248,000
-720 to the power 4268,738,560,000
-720 to the power 5-193,491,763,200,000
First ten multiples-720, -1,440, -2,160, -2,880, -3,600, -4,320, -5,040, -5,760, -6,480, -7,200
Powers of twoBetween 2^9 (512) and 2^10 (1,024)
Divisibility tests
Divisible by 2Yes
Divisible by 3Yes
Divisible by 4Yes
Divisible by 5Yes
Divisible by 6Yes
Divisible by 7No, remainder 6
Divisible by 8Yes
Divisible by 9Yes
Divisible by 10Yes
Divisible by 11No, remainder 5
Divisible by 12Yes
Divisible by 100No, remainder 20
As a percentage & fraction
As a percentage-72,000%
-720% as a decimal-7.2
-720% of 100-720
-720% of 1,000-7,200
As a fraction of 100-720/100
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