20171021 is an odd 8-digits composite number following 20171020
and preceding 20171022 . In scientific notation, it is written as 2.0171021 × 10^7.
The sum of its digits is 14. It has a total of 2 prime factors and 4 positive divisors.
There are 18619392 positive integers (up to 20171021) that are relatively prime to 20171021.
20171021 has 4 divisors, whose sum is 21722652
The reverse of 20171021 is 12017102
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 14
Digital Root 5
Name
twenty million one hundred seventy-one thousand twenty-one
Scientific notation
2.0171021 × 10^7
Engineering notation
2.0171021 × 10^6
Prime Factorization
13 × 1551617
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20171021
Product of the distinct prime numbers
The prime factorization of 20171021 is 13 × 1551617.
Since it has a total of 2 prime factors.
9 , 10 , 42 , 89 , 274 , 848 , 3126 , 7987 , 70024 , 35123 , 445548 , 29501 , 7540325 , 8189208 , 76481914 , 15253846 , 327166989 , 869069679 , 8211663979 , 7813384190
n×2
40342042
n×3
60513063
n×4
80684084
n×5
100855105
n÷2
10085510.5
n÷3
6723673.6666667
n÷3
5042755.25
n÷5
4034204.2
n2
406870088182441
n3
8.2069850929999E+21
n4
1.6554326865759E+29
n5
3.3391767485008E+36
2 √n
4491.2159823371
3 √n
272.21327077481
4 √n
67.01653514124
5 √n
28.903176589691
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20171020
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20171021 can be divided by 4 positive divisors.
The sum of these divisors (counting 20171021) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100111100100100001101
3
Ternary
1101221210102212
4
Quaternary
1030330210031
5
Quinary
20130433041
6
Senary
2000200205
8
Octal
114744415
10
Decimal
20171021
12
Duodecimal
6909065
16
Hexadecimal
133c90d
20
Vigesimal
6617b1
36
Base36
c0c25
md5
8d007495183d1d28a76bd4ab9319abb7
sha1
a8d6ea8c887f3af1565a121a26a5c387617c8133
sha256
afee6e67961efef13e8c02c1bf3fa3864c6cda1004280cc288ec90aab9864ba6
sha512
9e03a79885373454e2e3f896f50c6860b3ce6ea53af9b57d4273b7ba04e8f4b5b04ffc363ca2ef66bf7c1070a711cd94372aef352a2c60cb21a76fbbc74ebff5
ripemd-160
586695a436f4fe3b27e9b9a1d35f45ca1b70eec6
Diameter
40342042
Circumference
126738262.77801
Area
1.2782200799994E+15
Volume
3.4377338768386E+22
Surface area
5.1128803199976E+15
Circumference
126738262.77801
Perimeter
80684084
Area
406870088182441
Diagonal
28526131.465113
Surface area
2441220529094646
Volume
8.2069850929999E+21
Space diagonal
34937233.212539
Perimeter
60513063
Area
1.76179916203E+14
Altitude
17468616.606269
Surface area
1.76179916203E+14
Volume
9.6720246872619E+20
Height
9508710.4883708