20687686 is an even 8-digits composite number following 20687685
and preceding 20687687 . In scientific notation, it is written as 2.0687686 × 10^7.
The sum of its digits is 43. It has a total of 3 prime factors and 8 positive divisors.
There are 10283880 positive integers (up to 20687686) that are relatively prime to 20687686.
20687686 has 8 divisors, whose sum is 31211424
The reverse of 20687686 is 68678602
Previous prime number is 173
Is Prime? no
Number parity even
Number length 8
Sum of Digits 43
Digital Root 7
Name
twenty million six hundred eighty-seven thousand six hundred eighty-six
Scientific notation
2.0687686 × 10^7
Engineering notation
2.0687686 × 10^6
Prime Factorization
2 × 173 × 59791
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20687686
Product of the distinct prime numbers
The prime factorization of 20687686 is 2 × 173 × 59791.
Since it has a total of 3 prime factors.
4 , 7 , 76 , 100 , 411 , 501 , 3850 , 1381 , 30432 , 91961 , 446647 , 137469 , 5956114 , 3780437 , 25661138 , 62589906 , 622878208 , 326907130 , 1239949930 , 4000394009
n×2
41375372
n×3
62063058
n×4
82750744
n×5
103438430
n÷2
10343843
n÷3
6895895.3333333
n÷3
5171921.5
n÷5
4137537.2
n2
427980352034596
n3
8.8539231370612E+21
n4
1.8316718172766E+29
n5
3.7893051410867E+36
2 √n
4548.3717965883
3 √n
274.51788143452
4 √n
67.441617689586
5 √n
29.049748924887
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
-20687685
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 20687686 can be divided by 8 positive divisors.
The sum of these divisors (counting 20687686) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001110111010101101000110
3
Ternary
1102221001011121
4
Quaternary
1032322231012
5
Quinary
20244001221
6
Senary
2015224154
8
Octal
116725506
10
Decimal
20687686
12
Duodecimal
6b1805a
16
Hexadecimal
13bab46
20
Vigesimal
695j46
36
Base36
cbepy
md5
e62fd87d4d089ca7a3efe89626cadc26
sha1
b9202f868466e9183df699f42d5436e6fb1d99d6
sha256
27470ffd275efcd4680bab5f3be0292395d769c49833b7f20412cf9ca543c547
sha512
957262e8fcfca6f08dd908c3b3af9c387dc67140317b462391ffac9059a091b7e44e503d76aed2fd818fc7bfab308ddcbaf45c8870e597dbfdcd3dd757e1e5d7
ripemd-160
a8957678bbbb13133bfc5964d95681e07e000f7a
Diameter
41375372
Circumference
129984564.71474
Area
1.3445399298327E+15
Volume
3.7087226510453E+22
Surface area
5.3781597193306E+15
Circumference
129984564.71474
Perimeter
82750744
Area
427980352034596
Diagonal
29256806.115316
Surface area
2567882112207576
Volume
8.8539231370612E+21
Space diagonal
35832123.243031
Perimeter
62063058
Area
1.8532092859128E+14
Altitude
17916061.621516
Surface area
1.8532092859128E+14
Volume
1.0434448483867E+21
Height
9752268.7051053