71388281 is an odd 8-digits composite number following 71388280
and preceding 71388282 . In scientific notation, it is written as 7.1388281 × 10^7.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 69458832 positive integers (up to 71388281) that are relatively prime to 71388281.
71388281 has 4 divisors, whose sum is 73317732
The reverse of 71388281 is 18288317
Previous prime number is 37
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
seventy-one million three hundred eighty-eight thousand two hundred eighty-one
Scientific notation
7.1388281 × 10^7
Engineering notation
7.1388281 × 10^6
Prime Factorization
37 × 1929413
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
71388281
Product of the distinct prime numbers
The prime factorization of 71388281 is 37 × 1929413.
Since it has a total of 2 prime factors.
10 , 9 , 42 , 47 , 157 , 307 , 2918 , 7368 , 26707 , 74596 , 667219 , 458348 , 3544960 , 5579893 , 7740177 , 27831735 , 571030076 , 614356443 , 3613078702 , 1207518418
n×2
142776562
n×3
214164843
n×4
285553124
n×5
356941405
n÷2
35694140.5
n÷3
23796093.666667
n÷3
17847070.25
n÷5
14277656.2
n2
5096286664134961
n3
3.6381514443582E+23
n4
2.597213776304E+31
n5
1.8541062687986E+39
2 √n
8449.1585971622
3 √n
414.83523918817
4 √n
91.919304812222
5 √n
37.215630822868
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
-71388280
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 71388281 can be divided by 4 positive divisors.
The sum of these divisors (counting 71388281) is 1, the average is 0.25.
Base
System
Value
2
Binary
100010000010100110001111001
3
Ternary
11222022220022102
4
Quaternary
10100110301321
5
Quinary
121233411111
6
Senary
11030033145
8
Octal
420246171
10
Decimal
71388281
12
Duodecimal
1baa87b5
16
Hexadecimal
4414c79
20
Vigesimal
1263ae1
36
Base36
16i3jt
md5
718fa5e4013a45e6066b17f1c19a52d3
sha1
c5fcdd16e616b062567e9e3ad678ce87ae6a9b28
sha256
fe8e281008169da351d2fa5590af817b578d36b57830e9ed56f9f941ea24d37b
sha512
782ec3b9b3216025d0ac9b31b01410f9f92cfde71e0308b52f775006cb61b9ae21233b3bd881d656f9eb2acb61c1a660ca2beb7a8e654605c5431356ad535e88
ripemd-160
779767065f44a931f06a9eca04e24dfaeaa43771
Diameter
142776562
Circumference
448545798.28401
Area
1.6010456744634E+16
Volume
1.5239453133657E+24
Surface area
6.4041826978536E+16
Circumference
448545798.28401
Perimeter
285553124
Area
5096286664134961
Diagonal
100958275.1847
Surface area
30577719984809766
Volume
3.6381514443582E+23
Space diagonal
123648129.757
Perimeter
214164843
Area
2.2067568580544E+15
Altitude
61824064.878502
Surface area
2.2067568580544E+15
Volume
4.2876025954822E+22
Height
33652758.394901