81342615 is an odd 8-digits composite number following 81342614
and preceding 81342616 . In scientific notation, it is written as 8.1342615 × 10^7.
The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors.
There are 43382720 positive integers (up to 81342615) that are relatively prime to 81342615.
81342615 has 4 divisors, whose sum is 86765472
The reverse of 81342615 is 51624318
Previous prime number is 15
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
eighty-one million three hundred forty-two thousand six hundred fifteen
Scientific notation
8.1342615 × 10^7
Engineering notation
8.1342615 × 10^6
Prime Factorization
15 × 5422841
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81342615
Product of the distinct prime numbers
The prime factorization of 81342615 is 15 × 5422841.
Since it has a total of 2 prime factors.
10 , 5 , 62 , 74 , 303 , 461 , 9123 , 4319 , 72198 , 66845 , 386345 , 412692 , 8861541 , 6657841 , 29906677 , 96032180 , 603429011 , 172821774 , 4447102811 , 4883621086
n×2
162685230
n×3
244027845
n×4
325370460
n×5
406713075
n÷2
40671307.5
n÷3
27114205
n÷3
20335653.75
n÷5
16268523
n2
6616621015038225
n3
5.3821325582716E+23
n4
4.3779673656645E+31
n5
3.5611531390782E+39
2 √n
9019.0140813728
3 √n
433.28405784207
4 √n
94.968489939415
5 √n
38.200023140559
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
-81342614
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 81342615 can be divided by 4 positive divisors.
The sum of these divisors (counting 81342615) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110110010011000010010111
3
Ternary
12200001122002110
4
Quaternary
10312103002113
5
Quinary
131310430430
6
Senary
12023242103
8
Octal
466230227
10
Decimal
81342615
12
Duodecimal
232a9333
16
Hexadecimal
4d93097
20
Vigesimal
1587gaf
36
Base36
1cfgd3
md5
c45c4eef66b1e6814fcfc19993f92cb2
sha1
43c26ee1c47d8676813b892ac138adb3b5754884
sha256
013c2d34e01821ac4a8f84f9b739f3d080e7a386dce218c12d2e0086325294d3
sha512
36bd2616eb4db11bd3d6265c4dbbe84b4f53cab234d96a6e00e8fe3d3c088a4f38100b6396cc961ef223e8d9bdfe31ff558a0a2beb02e40298724a34b0e659ff
ripemd-160
8f4c6ea6041dd789a8f44756b545e7687c3b1f5f
Diameter
162685230
Circumference
511090723.41557
Area
2.0786727972432E+16
Volume
2.254462414095E+24
Surface area
8.3146911889728E+16
Circumference
511090723.41557
Perimeter
325370460
Area
6616621015038225
Diagonal
115035829.33189
Surface area
39699726090229350
Volume
5.3821325582716E+23
Space diagonal
140889542.00051
Perimeter
244027845
Area
2.8650809431185E+15
Altitude
70444771.000257
Surface area
2.8650809431185E+15
Volume
6.3429040486646E+22
Height
38345276.443964