81870107 is an odd 8-digits composite number following 81870106
and preceding 81870108 . In scientific notation, it is written as 8.1870107 × 10^7.
The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors.
There are 69001920 positive integers (up to 81870107) that are relatively prime to 81870107.
81870107 has 16 divisors, whose sum is 91484640
The reverse of 81870107 is 70107818
Previous prime number is 389
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
eighty-one million eight hundred seventy thousand one hundred seven
Scientific notation
8.1870107 × 10^7
Engineering notation
8.1870107 × 10^6
Prime Factorization
11 × 361 × 389 × 53
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81870107
Product of the distinct prime numbers
The prime factorization of 81870107 is 11 × 361 × 389 × 53.
Since it has a total of 4 prime factors.
6 , 7 , 52 , 38 , 515 , 499 , 454 , 9117 , 94162 , 20030 , 954959 , 759119 , 6529090 , 4708991 , 91118342 , 23786371 , 338607227 , 963280993 , 1525802107 , 9294663312
n×2
163740214
n×3
245610321
n×4
327480428
n×5
409350535
n÷2
40935053.5
n÷3
27290035.666667
n÷3
20467526.75
n÷5
16374021.4
n2
6702714420191449
n3
5.4875194677152E+23
n4
4.4926380598642E+31
n5
3.6781275867336E+39
2 √n
9048.2101545002
3 √n
434.21862989094
4 √n
95.122080267939
5 √n
38.249439159196
1 , 11 , 53 , 361 , 389 , 583 , 3971 , 4279 , 19133 , 20617 , 140429 , 210463 , 226787 , 1544719 , 7442737 , 81870107
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81870106
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81870107 can be divided by 16 positive divisors.
The sum of these divisors (counting 81870107) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100111000010011110100011011
3
Ternary
12201001102200012
4
Quaternary
10320103310123
5
Quinary
131424320412
6
Senary
12042432135
8
Octal
470236433
10
Decimal
81870107
12
Duodecimal
2350264b
16
Hexadecimal
4e13d1b
20
Vigesimal
15bdf57
36
Base36
1cqrdn
md5
21a3882d5dcd823caa98721c1c520cb8
sha1
7e14c592e7023102af824da5ff10aa2e3b7af00f
sha256
7d05f679645a4ba7c9b671ff71527c9b834335643691efb3c12d4c9635e22fc7
sha512
89afbf682ebe94448903571756aa85696f6e9a2d3e1218ab227bbb6463676ac21dfdf396687376050ef8c87831587fd05025111964b461896e014179338d6b71
ripemd-160
83e1b0781a44c92266f52c93825844976743d901
Diameter
163740214
Circumference
514405053.39962
Area
2.1057198381584E+16
Volume
2.298606779494E+24
Surface area
8.4228793526335E+16
Circumference
514405053.39962
Perimeter
327480428
Area
6702714420191449
Diagonal
115781815.67234
Surface area
40216286521148694
Volume
5.4875194677152E+23
Space diagonal
141803184.9451
Perimeter
245610321
Area
2.902360481099E+15
Altitude
70901592.47255
Surface area
2.902360481099E+15
Volume
6.4671037125243E+22
Height
38593938.557445