81271641 is an odd 8-digits composite number following 81271640
and preceding 81271642 . In scientific notation, it is written as 8.1271641 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 48560400 positive integers (up to 81271641) that are relatively prime to 81271641.
81271641 has 8 divisors, whose sum is 84916224
The reverse of 81271641 is 14617218
Previous prime number is 71
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
eighty-one million two hundred seventy-one thousand six hundred forty-one
Scientific notation
8.1271641 × 10^7
Engineering notation
8.1271641 × 10^6
Prime Factorization
33 × 71 × 34687
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81271641
Product of the distinct prime numbers
The prime factorization of 81271641 is 33 × 71 × 34687.
Since it has a total of 3 prime factors.
4 , 2 , 4 , 67 , 86 , 15 , 6657 , 6100 , 5568 , 36234 , 971666 , 71187 , 3822717 , 711296 , 92256534 , 15382590 , 167115918 , 974552035 , 5810189819 , 8757409928
n×2
162543282
n×3
243814923
n×4
325086564
n×5
406358205
n÷2
40635820.5
n÷3
27090547
n÷3
20317910.25
n÷5
16254328.2
n2
6605079630832881
n3
5.3680566053346E+23
n4
4.3627076929643E+31
n5
3.5456441341054E+39
2 √n
9015.0785354316
3 √n
433.15800316555
4 √n
94.947767406251
5 √n
38.193354667499
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81271640
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81271641 can be divided by 8 positive divisors.
The sum of these divisors (counting 81271641) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110000001101101011001
3
Ternary
12122221000201210
4
Quaternary
10312001231121
5
Quinary
131301143031
6
Senary
12021533333
8
Octal
466015531
10
Decimal
81271641
12
Duodecimal
23274249
16
Hexadecimal
4d81b59
20
Vigesimal
157ij21
36
Base36
1cdxll
md5
ddd8680c07ac7fcbe2c7497329eeb656
sha1
c064af37c1a20c5f5b01ab5c174e68e1e90fcd1a
sha256
29ee8d8f3884f642427cf42b9f01d6a623ad6cbb4e8e89c8a6ecf749416db929
sha512
9615032fbf83596137cbd1a7699afbba2c6f57d3ac38ffd3b79ce50e402e01b2b4c7ea76748196dbfa1c83bc2c905505ce64232b85837a674237c0f6aaaa352f
ripemd-160
feaa0d69c91dad201c7fe59d7bbd3bb129af7b50
Diameter
162543282
Circumference
510644780.62157
Area
2.07504696446E+16
Volume
2.2485662927165E+24
Surface area
8.3001878578401E+16
Circumference
510644780.62157
Perimeter
325086564
Area
6605079630832881
Diagonal
114935456.93852
Surface area
39630477784997286
Volume
5.3680566053346E+23
Space diagonal
140766611.4265
Perimeter
243814923
Area
2.8600833771602E+15
Altitude
70383305.713249
Surface area
2.8600833771602E+15
Volume
6.3263153790423E+22
Height
38311818.979506