71806721 is an odd 8-digits composite number following 71806720
and preceding 71806722 . In scientific notation, it is written as 7.1806721 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 61548612 positive integers (up to 71806721) that are relatively prime to 71806721.
71806721 has 4 divisors, whose sum is 82064832
The reverse of 71806721 is 12760817
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
seventy-one million eight hundred six thousand seven hundred twenty-one
Scientific notation
7.1806721 × 10^7
Engineering notation
7.1806721 × 10^6
Prime Factorization
7 × 10258103
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
71806721
Product of the distinct prime numbers
The prime factorization of 71806721 is 7 × 10258103.
Since it has a total of 2 prime factors.
4 , 8 , 32 , 99 , 804 , 232 , 8012 , 7673 , 52299 , 62456 , 656080 , 563860 , 7008028 , 914946 , 42220698 , 22273271 , 609541323 , 46279758 , 7798286820 , 305276157
n×2
143613442
n×3
215420163
n×4
287226884
n×5
359033605
n÷2
35903360.5
n÷3
23935573.666667
n÷3
17951680.25
n÷5
14361344.2
n2
5156205180771841
n3
3.7025018683444E+23
n4
2.6586451866218E+31
n5
1.9090859315375E+39
2 √n
8473.8846463709
3 √n
415.64417497605
4 √n
92.053705228909
5 √n
37.259156525214
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-71806720
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 71806721 can be divided by 4 positive divisors.
The sum of these divisors (counting 71806721) is 1, the average is 0.25.
Base
System
Value
2
Binary
100010001111010111100000001
3
Ternary
12000010011022012
4
Quaternary
10101322330001
5
Quinary
121340303341
6
Senary
11043022305
8
Octal
421727401
10
Decimal
71806721
12
Duodecimal
2006a995
16
Hexadecimal
447af01
20
Vigesimal
128fgg1
36
Base36
16r2f5
md5
7d7d072c21566a6ef9a8c4a5880890ac
sha1
c8982200e99f6a178f73cd4be7af79330c6fa2ac
sha256
7ce3b338da0852cf2288cb37615691bdf8112d12faba4444ff21334801f900a4
sha512
11bdedd3ff73a609310a0545cbf96389a5cb41128e8016c3d8b0cd6264e6ca35716b07fa3ac1657b3e010b6f24d381c01a7f7a2198d0ea5964cef393cdb2d1a0
ripemd-160
b809afb3a1f0df3b127e06cd5965d89b8faeda51
Diameter
143613442
Circumference
451174934.34394
Area
1.6198696316314E+16
Volume
1.5509003559324E+24
Surface area
6.4794785265258E+16
Circumference
451174934.34394
Perimeter
287226884
Area
5156205180771841
Diagonal
101550038.70774
Surface area
30937231084631046
Volume
3.7025018683444E+23
Space diagonal
124372889.09692
Perimeter
215420163
Area
2.2327023368367E+15
Altitude
62186444.548462
Surface area
2.2327023368367E+15
Volume
4.363440297437E+22
Height
33850012.90258