20171208 is an even 8-digits composite number following 20171207
and preceding 20171209 . In scientific notation, it is written as 2.0171208 × 10^7.
The sum of its digits is 21. It has a total of 5 prime factors and 16 positive divisors.
There are 6723728 positive integers (up to 20171208) that are relatively prime to 20171208.
20171208 has 16 divisors, whose sum is 50428080
The reverse of 20171208 is 80217102
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty million one hundred seventy-one thousand two hundred eight
Scientific notation
2.0171208 × 10^7
Engineering notation
2.0171208 × 10^6
Prime Factorization
2 × 2 × 2 × 3 × 840467
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
5042802
Product of the distinct prime numbers
The prime factorization of 20171208 is 2 × 2 × 2 × 3 × 840467.
Since it has a total of 5 prime factors.
9 , 9 , 9 , 18 , 349 , 540 , 9133 , 4854 , 54437 , 39612 , 532229 , 697143 , 2574100 , 5438063 , 42324552 , 78120290 , 163532169 , 160829545 , 7681129994 , 2690714296
n×2
40342416
n×3
60513624
n×4
80684832
n×5
100856040
n÷2
10085604
n÷3
6723736
n÷3
5042802
n÷5
4034241.6
n2
406877632179264
n3
8.2072133492354E+21
n4
1.655494075678E+29
n5
3.339331534327E+36
2 √n
4491.2368007042
3 √n
272.21411197705
4 √n
67.016690463677
5 √n
28.903230180176
1 , 2 , 3 , 4 , 6 , 8 , 12 , 24 , 840467 , 1680934 , 2521401 , 3361868 , 5042802 , 6723736 , 10085604 , 20171208
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
-20171207
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 20171208 can be divided by 16 positive divisors.
The sum of these divisors (counting 20171208) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001100111100100111001000
3
Ternary
1101221210200210
4
Quaternary
1030330213020
5
Quinary
20130434313
6
Senary
2000201120
8
Octal
114744710
10
Decimal
20171208
12
Duodecimal
69091a0
16
Hexadecimal
133c9c8
20
Vigesimal
661808
36
Base36
c0c7c
md5
8f7624e8bea917c6df58af3948bc97c7
sha1
34b3691c7db2c5a8e499bbf8735b7a5a30f28dfd
sha256
c2362e4d5ebdc119f250eefb60e358509acc6b1e1a1e3ec6516d34ba94376e33
sha512
958df819b2d9f4b764677e4c2d4ea9231c3a698b9f32fb0e9fb13c6f6abcd0dd6b179ae181421dac10ab824bdd97485c1a08809a59368f0ae27c28e39a4a7a06
ripemd-160
2d2c8f26c6efe34bfac65030e7ace91d84c7a54f
Diameter
40342416
Circumference
126739437.73366
Area
1.2782437801644E+15
Volume
3.4378294885869E+22
Surface area
5.1129751206575E+15
Circumference
126739437.73366
Perimeter
80684832
Area
406877632179264
Diagonal
28526395.923049
Surface area
2441265793075584
Volume
8.2072133492354E+21
Space diagonal
34937557.10604
Perimeter
60513624
Area
1.7618318284945E+14
Altitude
17468778.55302
Surface area
1.7618318284945E+14
Volume
9.6722936898152E+20
Height
9508798.6410162