20871009 is an odd 8-digits composite number following 20871008
and preceding 20871010 . In scientific notation, it is written as 2.0871009 × 10^7.
The sum of its digits is 27. It has a total of 4 prime factors and 16 positive divisors.
There are 13452480 positive integers (up to 20871009) that are relatively prime to 20871009.
20871009 has 16 divisors, whose sum is 23970240
The reverse of 20871009 is 90017802
Previous prime number is 41
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million eight hundred seventy-one thousand nine
Scientific notation
2.0871009 × 10^7
Engineering notation
2.0871009 × 10^6
Prime Factorization
9 × 163 × 41 × 347
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20871009
Product of the distinct prime numbers
The prime factorization of 20871009 is 9 × 163 × 41 × 347.
Since it has a total of 4 prime factors.
3 , 8 , 33 , 42 , 586 , 718 , 3293 , 9200 , 325 , 18996 , 597120 , 977668 , 212630 , 4526465 , 72863997 , 12075178 , 765728669 , 962106581 , 1856632616 , 8085113343
n×2
41742018
n×3
62613027
n×4
83484036
n×5
104355045
n÷2
10435504.5
n÷3
6957003
n÷3
5217752.25
n÷5
4174201.8
n2
435599016678081
n3
9.0913909974794E+21
n4
1.8974650333091E+29
n5
3.960200978738E+36
2 √n
4568.479944139
3 √n
275.32637393402
4 √n
67.590531468091
5 √n
29.101052006754
1 , 9 , 41 , 163 , 347 , 369 , 1467 , 3123 , 6683 , 14227 , 56561 , 60147 , 128043 , 509049 , 2319001 , 20871009
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
-20871008
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 20871009 can be divided by 16 positive divisors.
The sum of these divisors (counting 20871009) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001111100111011101100001
3
Ternary
1110021100122100
4
Quaternary
1033213131201
5
Quinary
20320333014
6
Senary
2023201013
8
Octal
117473541
10
Decimal
20871009
12
Duodecimal
6ba6169
16
Hexadecimal
13e7761
20
Vigesimal
6a8ha9
36
Base36
cfc69
md5
c0aaff7a248d4e23b0a88ffa1a965d49
sha1
f782d24d2a65363660881a713610bdea1e3cb170
sha256
926cc827c36d13cce77a12d8abfc635ac4f7ba08f31d943f9c4caee196874a48
sha512
8cffd819675bb209cdc313758de5c33c0014116e4d325d44501049254e286f4c1cceac6be6e956498cb09db8fc173f50c6c2fe2ab0d5ac759f4eb7f843bdc9b4
ripemd-160
46f24dc62c9cbdef3f33d9343a160a50eef1cffe
Diameter
41742018
Circumference
131136417.09481
Area
1.3684746707068E+15
Volume
3.8081929558125E+22
Surface area
5.4738986828272E+15
Circumference
131136417.09481
Perimeter
83484036
Area
435599016678081
Diagonal
29516063.988211
Surface area
2613594100068486
Volume
9.0913909974794E+21
Space diagonal
36149647.993227
Perimeter
62613027
Area
1.8861990715337E+14
Altitude
18074823.996614
Surface area
1.8861990715337E+14
Volume
1.0714307041227E+21
Height
9838687.9960703