729 is an odd 3-digits composite number following 728
and preceding 730 . In scientific notation, it is written as 7.29 × 10^2.
The sum of its digits is 18. It has a total of 3 prime factors and 6 positive divisors.
There are 486 positive integers (up to 729) that are relatively prime to 729.
729 has 6 divisors, whose sum is 1066
The reverse of 729 is 927
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 3
Sum of Digits 18
Digital Root 9
Name
seven hundred twenty-nine
Scientific notation
7.29 × 10^2
Engineering notation
7.29 × 10^0
Prime Factorization
81 × 3 × 3
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
243
Product of the distinct prime numbers
The prime factorization of 729 is 81 × 3 × 3.
Since it has a total of 3 prime factors.
8 , 9 , 32 , 81 , 671 , 420 , 6502 , 6021 , 46618 , 52439 , 232959 , 307864 , 254172 , 6871964 , 61448847 , 76842692 , 217114497 , 380463159 , 3706078500 , 6791580512
n×2
1458
n×3
2187
n×4
2916
n×5
3645
n÷2
364.5
n÷3
243
n÷3
182.25
n÷5
145.8
n2
531441
n3
387420489
n4
282429536481
n5
205891132094649
2 √n
27
3 √n
9
4 √n
5.1961524227066
5 √n
3.7371928188466
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-728
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 729 can be divided by 6 positive divisors.
The sum of these divisors (counting 729) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
1011011001
3
Ternary
1000000
4
Quaternary
23121
5
Quinary
10404
6
Senary
3213
8
Octal
1331
10
Decimal
729
12
Duodecimal
509
16
Hexadecimal
2d9
20
Vigesimal
1g9
36
Base36
k9
md5
5751ec3e9a4feab575962e78e006250d
sha1
baa924ce1ee3617f30a87ca26b2aeb62911af478
sha256
509694b0a010c6431900e71b8210521af57d39ce8e64deb365f0a5c6c9a2ef6d
sha512
47ccc6b01d9b2b8f27bac167d1fa138ad0f76d377637d4676c4496aa58300a393713a7188d0effd3973a7a16cce2a690e8060689286b171b12bd1cb3d33da536
ripemd-160
e8421bf9c828fc9448291d30b47e82e43b846487
Diameter
1458
Circumference
4580.4420889339
Area
1669571.1414164
Volume
1622823149.4568
Surface area
6678284.5656657
Circumference
4580.4420889339
Perimeter
2916
Area
531441
Diagonal
1030.96168697
Surface area
3188646
Volume
387420489
Space diagonal
1262.6650387177
Perimeter
2187
Area
230120.7033063
Altitude
631.33251935886
Surface area
230120.7033063
Volume
45657942.490418
Height
343.65389565666