81120210 is an even 8-digits composite number following 81120209
and preceding 81120211 . In scientific notation, it is written as 8.1120210 × 10^7.
The sum of its digits is 15. It has a total of 5 prime factors and 32 positive divisors.
There are 21026304 positive integers (up to 81120210) that are relatively prime to 81120210.
81120210 has 32 divisors, whose sum is 133477632
The reverse of 81120210 is 01202118
Previous prime number is 163
Is Prime? no
Number parity even
Number length 8
Sum of Digits 15
Digital Root 6
Name
eighty-one million one hundred twenty thousand two hundred ten
Scientific notation
8.1120210 × 10^7
Engineering notation
8.1120210 × 10^6
Prime Factorization
2 × 15 × 53 × 163 × 313
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
81120210
Product of the distinct prime numbers
The prime factorization of 81120210 is 2 × 15 × 53 × 163 × 313.
Since it has a total of 5 prime factors.
2 , 1 , 40 , 66 , 250 , 417 , 5441 , 3303 , 26517 , 79907 , 173735 , 992254 , 3916821 , 8088471 , 74472254 , 21656119 , 992579263 , 967803679 , 1858709972 , 6835906062
n×2
162240420
n×3
243360630
n×4
324480840
n×5
405601050
n÷2
40560105
n÷3
27040070
n÷3
20280052.5
n÷5
16224042
n2
6580488470444100
n3
5.33810606625E+23
n4
4.3302828509648E+31
n5
3.5127345422966E+39
2 √n
9006.6758573849
3 √n
432.888805815
4 √n
94.903508140558
5 √n
38.179111142326
1 , 2 , 15 , 30 , 53 , 106 , 163 , 313 , 326 , 626 , 795 , 1590 , 2445 , 4695 , 4890 , 8639 , 9390 , 16589 , 17278 , 33178 , 51019 , 102038 , 129585 , 248835 , 259170 , 497670 , 765285 , 1530570 , 2704007 , 5408014 , 40560105 , 81120210
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81120209
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81120210 can be divided by 32 positive divisors.
The sum of these divisors (counting 81120210) is 1, the average is 0.03125.
Base
System
Value
2
Binary
100110101011100101111010010
3
Ternary
12122122100000020
4
Quaternary
10311130233102
5
Quinary
131231321320
6
Senary
12014404310
8
Octal
465345722
10
Decimal
81120210
12
Duodecimal
23200696
16
Hexadecimal
4d5cbd2
20
Vigesimal
15700aa
36
Base36
1caor6
md5
429a204b263080138c7b56692d434799
sha1
d43a5203794865de0d4a34ea037a27d362ce135a
sha256
829b4c54e1c2759034f8330ef2427c8c59035e814549b2ca72e4430b5945b79d
sha512
791091ee15544cb88b9a6baaa04b4e8eb20f29a36f94ceb07848ce9d94310f417205b361b0db7eb1216f181c241acbf240bd6eecbe8154a1dfe5bec853f33892
ripemd-160
ad64fc5a3db02bef311676077444eb4f383fd659
Diameter
162240420
Circumference
509693311.58732
Area
2.067321423578E+16
Volume
2.2360206402419E+24
Surface area
8.2692856943118E+16
Circumference
509693311.58732
Perimeter
324480840
Area
6580488470444100
Diagonal
114721301.16455
Surface area
39482930822664600
Volume
5.33810606625E+23
Space diagonal
140504325.24066
Perimeter
243360630
Area
2.8494350923576E+15
Altitude
70252162.620328
Surface area
2.8494350923576E+15
Volume
6.2910183302308E+22
Height
38240433.721518