81202215 is an odd 8-digits composite number following 81202214
and preceding 81202216 . In scientific notation, it is written as 8.1202215 × 10^7.
The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors.
There are 43307840 positive integers (up to 81202215) that are relatively prime to 81202215.
81202215 has 8 divisors, whose sum is 129923568
The reverse of 81202215 is 51220218
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
eighty-one million two hundred two thousand two hundred fifteen
Scientific notation
8.1202215 × 10^7
Engineering notation
8.1202215 × 10^6
Prime Factorization
3 × 5 × 5413481
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81202215
Product of the distinct prime numbers
The prime factorization of 81202215 is 3 × 5 × 5413481.
Since it has a total of 3 prime factors.
7 , 7 , 71 , 6 , 183 , 583 , 1319 , 5999 , 17684 , 7801 , 160934 , 197193 , 3273352 , 891865 , 36016624 , 67324851 , 458736615 , 483898795 , 1572069456 , 6817185151
n×2
162404430
n×3
243606645
n×4
324808860
n×5
406011075
n÷2
40601107.5
n÷3
27067405
n÷3
20300553.75
n÷5
16240443
n2
6593799720906225
n3
5.3543114260397E+23
n4
4.3478194759423E+31
n5
3.5305257186665E+39
2 √n
9011.2271639328
3 √n
433.03462681799
4 √n
94.927483712215
5 √n
38.186827130156
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
-81202214
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 81202215 can be divided by 8 positive divisors.
The sum of these divisors (counting 81202215) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110101110000110000100111
3
Ternary
12122210111111110
4
Quaternary
10311300300213
5
Quinary
131241432330
6
Senary
12020240103
8
Octal
465606047
10
Decimal
81202215
12
Duodecimal
23240033
16
Hexadecimal
4d70c27
20
Vigesimal
157a5af
36
Base36
1ccg13
md5
c16098a2dc1cfdc40b5aef6580411f37
sha1
1e70427970ebfe652c48416bbe5009d375bb2bed
sha256
2365d586925f0fbc28f92f959c28c841943308651f57f4630a08d61ce0ccc9ff
sha512
5a83c6220a090c965f5d3de10f6cc3b5f6c5c7f08cb9a7b1f4440383f549f7a637736359cac97a6d9166bae878458f5715f67659ce1410754d0f4886571ee722
ripemd-160
895eb2bfc332147d75e6cd220bef44c279d6c877
Diameter
162404430
Circumference
510208564.19844
Area
2.0715032762441E+16
Volume
2.2428087254771E+24
Surface area
8.2860131049766E+16
Circumference
510208564.19844
Perimeter
324808860
Area
6593799720906225
Diagonal
114837273.74774
Surface area
39562798325437350
Volume
5.3543114260397E+23
Space diagonal
140646362.06713
Perimeter
243606645
Area
2.8551990328858E+15
Altitude
70323181.033566
Surface area
2.8551990328858E+15
Volume
6.3101165298954E+22
Height
38279091.249245