20171979 is an odd 8-digits composite number following 20171978
and preceding 20171980 . In scientific notation, it is written as 2.0171979 × 10^7.
The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors.
There are 12245760 positive integers (up to 20171979) that are relatively prime to 20171979.
20171979 has 16 divisors, whose sum is 24503040
The reverse of 20171979 is 97917102
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty million one hundred seventy-one thousand nine hundred seventy-nine
Scientific notation
2.0171979 × 10^7
Engineering notation
2.0171979 × 10^6
Prime Factorization
9 × 31 × 17 × 4253
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20171979
Product of the distinct prime numbers
The prime factorization of 20171979 is 9 × 31 × 17 × 4253.
Since it has a total of 4 prime factors.
8 , 1 , 83 , 43 , 226 , 879 , 5480 , 574 , 31067 , 60853 , 327445 , 998128 , 5442113 , 9476874 , 53296049 , 93680954 , 544926871 , 229883930 , 6486895152 , 5477517527
n×2
40343958
n×3
60515937
n×4
80687916
n×5
100859895
n÷2
10085989.5
n÷3
6723993
n÷3
5042994.75
n÷5
4034395.8
n2
406908736776441
n3
8.2081544931709E+21
n4
1.65574720065E+29
n5
3.339969776082E+36
2 √n
4491.3226337016
3 √n
272.21758019449
4 √n
67.017330845846
5 √n
28.903451129261
1 , 9 , 17 , 31 , 153 , 279 , 527 , 4253 , 4743 , 38277 , 72301 , 131843 , 650709 , 1186587 , 2241331 , 20171979
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
-20171978
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 20171979 can be divided by 16 positive divisors.
The sum of these divisors (counting 20171979) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001100111100110011001011
3
Ternary
1101221211202100
4
Quaternary
1030330303023
5
Quinary
20131000404
6
Senary
2000204443
8
Octal
114746313
10
Decimal
20171979
12
Duodecimal
6909723
16
Hexadecimal
133cccb
20
Vigesimal
6619ij
36
Base36
c0csr
md5
6e7276125729a3ae601520a86b6e0f01
sha1
6eaa0cf907adbe06759cd646a49c85280a4bee16
sha256
e2311c36ef7f9459a685a4107065de81a32912ec0fde01aa2b9ab232c4c6d64b
sha512
9ba84799fd8492c7a6605a9e7e32a59a425327ee73168eff41dc5cbb02ad6d111df7fc85fe4d2c0dc59791534eda1d19f8789ea71f966bfac06026119abfc8d8
ripemd-160
282f1fee611f0d21e62c971abb20d5847d8eef56
Diameter
40343958
Circumference
126744282.06954
Area
1.2783414981384E+15
Volume
3.4382237140368E+22
Surface area
5.1133659925535E+15
Circumference
126744282.06954
Perimeter
80687916
Area
406908736776441
Diagonal
28527486.281705
Surface area
2441452420658646
Volume
8.2081544931709E+21
Space diagonal
34938892.517212
Perimeter
60515937
Area
1.7619665153512E+14
Altitude
17469446.258606
Surface area
1.7619665153512E+14
Volume
9.6734028385799E+20
Height
9509162.0939018