20871261 is an odd 8-digits composite number following 20871260
and preceding 20871262 . In scientific notation, it is written as 2.0871261 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 6 positive divisors.
There are 13914168 positive integers (up to 20871261) that are relatively prime to 20871261.
20871261 has 6 divisors, whose sum is 30147390
The reverse of 20871261 is 16217802
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million eight hundred seventy-one thousand two hundred sixty-one
Scientific notation
2.0871261 × 10^7
Engineering notation
2.0871261 × 10^6
Prime Factorization
3 × 3 × 2319029
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
6957087
Product of the distinct prime numbers
The prime factorization of 20871261 is 3 × 3 × 2319029.
Since it has a total of 3 prime factors.
3 , 6 , 66 , 50 , 544 , 674 , 5029 , 914 , 35098 , 3570 , 904595 , 83825 , 2671599 , 2955017 , 33567013 , 10597207 , 205859500 , 778058797 , 5795344154 , 2903919958
n×2
41742522
n×3
62613783
n×4
83485044
n×5
104356305
n÷2
10435630.5
n÷3
6957087
n÷3
5217815.25
n÷5
4174252.2
n2
435609535730121
n3
9.0917203143122E+21
n4
1.8975566761901E+29
n5
3.9604400651056E+36
2 √n
4568.5075243453
3 √n
275.32748204155
4 √n
67.590735491969
5 √n
29.101122280593
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20871260
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20871261 can be divided by 6 positive divisors.
The sum of these divisors (counting 20871261) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
1001111100111100001011101
3
Ternary
1110021100222200
4
Quaternary
1033213201131
5
Quinary
20320340021
6
Senary
2023202113
8
Octal
117474135
10
Decimal
20871261
12
Duodecimal
6ba6339
16
Hexadecimal
13e785d
20
Vigesimal
6a8i31
36
Base36
cfcd9
md5
07b555bbbf825ad240635f6c3e786822
sha1
49fccaff264a816760ee5f61747a62b371cbe14a
sha256
2e73d3e896545e5568ff8f87233cc9cd0b744512b32452703cfdd4a9ce638332
sha512
b5e8cdc10c3f557d901bc2399a7f57008bf1fa21e368a7bacbe8950dabb3761b8618e5acf05a1e857b2460b4755a0a872a599dc5ee073120c719c6ced088cc3b
ripemd-160
6893b29e26db5f1e430cae827c9a83cf318ab49a
Diameter
41742522
Circumference
131138000.45751
Area
1.3685077172834E+15
Volume
3.8083308997248E+22
Surface area
5.4740308691336E+15
Circumference
131138000.45751
Perimeter
83485044
Area
435609535730121
Diagonal
29516420.370029
Surface area
2613657214380726
Volume
9.0917203143122E+21
Space diagonal
36150084.470031
Perimeter
62613783
Area
1.8862446203651E+14
Altitude
18075042.235015
Surface area
1.8862446203651E+14
Volume
1.0714695144836E+21
Height
9838806.7900095