20908643 is an odd 8-digits composite number following 20908642
and preceding 20908644 . In scientific notation, it is written as 2.0908643 × 10^7.
The sum of its digits is 32. It has a total of 3 prime factors and 6 positive divisors.
There are 17921652 positive integers (up to 20908643) that are relatively prime to 20908643.
20908643 has 6 divisors, whose sum is 24322356
The reverse of 20908643 is 34680902
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty million nine hundred eight thousand six hundred forty-three
Scientific notation
2.0908643 × 10^7
Engineering notation
2.0908643 × 10^6
Prime Factorization
7 × 7 × 426707
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
2986949
Product of the distinct prime numbers
The prime factorization of 20908643 is 7 × 7 × 426707.
Since it has a total of 3 prime factors.
1 , 1 , 36 , 8 , 241 , 666 , 43 , 8770 , 85149 , 15095 , 286104 , 510667 , 4425053 , 9861077 , 71402272 , 88047328 , 117404192 , 359345237 , 4291582482 , 6007246626
n×2
41817286
n×3
62725929
n×4
83634572
n×5
104543215
n÷2
10454321.5
n÷3
6969547.6666667
n÷3
5227160.75
n÷5
4181728.6
n2
437171352101449
n3
9.1406597309165E+21
n4
1.9111879109821E+29
n5
3.996034573664E+36
2 √n
4572.5969645268
3 √n
275.49176141889
4 √n
67.620980209746
5 √n
29.11153928046
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
-20908642
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 20908643 can be divided by 6 positive divisors.
The sum of these divisors (counting 20908643) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
1001111110000101001100011
3
Ternary
1110100021021012
4
Quaternary
1033300221203
5
Quinary
20323034033
6
Senary
2024051135
8
Octal
117605143
10
Decimal
20908643
12
Duodecimal
7003aab
16
Hexadecimal
13f0a63
20
Vigesimal
6adbc3
36
Base36
cg57n
md5
a59e74b1f9d4dd49bcedbf00b92fa699
sha1
3ac71bcca13e5e5b67e51b8c9babd4e9e2f9f425
sha256
2f0cb2098e256a4a9c0f61efff261ad4ebf96c07535d3daf87c0bb125e670bea
sha512
0b3c50468301a7619a4d86c843a1276d6ef7d9e5b0095405b7e889eeea142aba71b7eb1265e2635fa3a4f6ded7f335ea115b665e8e694f33adf2fec9ad4aca4d
ripemd-160
178ffb44d09d4b7b6808da8b5faa69b166a45665
Diameter
41817286
Circumference
131372878.49066
Area
1.3734143081218E+15
Volume
3.8288305946148E+22
Surface area
5.4936572324873E+15
Circumference
131372878.49066
Perimeter
83634572
Area
437171352101449
Diagonal
29569286.501417
Surface area
2623028112608694
Volume
9.1406597309165E+21
Space diagonal
36214831.993319
Perimeter
62725929
Area
1.8930074836332E+14
Altitude
18107415.99666
Surface area
1.8930074836332E+14
Volume
1.0772370800416E+21
Height
9856428.8338058