20170981 is an odd 8-digits composite number following 20170980
and preceding 20170982 . In scientific notation, it is written as 2.0170981 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 20141100 positive integers (up to 20170981) that are relatively prime to 20170981.
20170981 has 4 divisors, whose sum is 20200864
The reverse of 20170981 is 18907102
Previous prime number is 691
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million one hundred seventy thousand nine hundred eighty-one
Scientific notation
2.0170981 × 10^7
Engineering notation
2.0170981 × 10^6
Prime Factorization
691 × 29191
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20170981
Product of the distinct prime numbers
The prime factorization of 20170981 is 691 × 29191.
Since it has a total of 2 prime factors.
2 , 2 , 10 , 72 , 780 , 745 , 9255 , 2765 , 96633 , 91396 , 83023 , 948332 , 7597994 , 359014 , 12107900 , 62670958 , 246282882 , 789782024 , 9864486925 , 4330844954
n×2
40341962
n×3
60512943
n×4
80683924
n×5
100854905
n÷2
10085490.5
n÷3
6723660.3333333
n÷3
5042745.25
n÷5
4034196.2
n2
406868474502361
n3
8.2069362686861E+21
n4
1.6554195554388E+29
n5
3.3391436399784E+36
2 √n
4491.2115291979
3 √n
272.21309083782
4 √n
67.016501917049
5 √n
28.903165126434
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
-20170980
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 20170981 can be divided by 4 positive divisors.
The sum of these divisors (counting 20170981) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100111100100011100101
3
Ternary
1101221210101101
4
Quaternary
1030330203211
5
Quinary
20130432411
6
Senary
2000200101
8
Octal
114744345
10
Decimal
20170981
12
Duodecimal
6909031
16
Hexadecimal
133c8e5
20
Vigesimal
661791
36
Base36
c0c11
md5
126f9efb6ea10ef4d13a4aa554c63156
sha1
e701e24138dc67df42f1c32057c3eaa35c31bc79
sha256
8cc3d4ea611d57367fa2e3a09abbacacff358e97f6bc9f3a111ea85719548d8b
sha512
241abe6c6acde0ecb26e35b7a267cb2400e997052a54bd81e17f236ae1ff39e3cfcfc6db9110441082137c844a325a8a7cff9ef5d5720cf919f468a8acf929d9
ripemd-160
c66e9e3b3d70e183bace70cf2424223e1fe061fe
Diameter
40341962
Circumference
126738011.4506
Area
1.2782150104739E+15
Volume
3.4377134253579E+22
Surface area
5.1128600418956E+15
Circumference
126738011.4506
Perimeter
80683924
Area
406868474502361
Diagonal
28526074.89657
Surface area
2441210847014166
Volume
8.2069362686861E+21
Space diagonal
34937163.930506
Perimeter
60512943
Area
1.7617921745903E+14
Altitude
17468581.965253
Surface area
1.7617921745903E+14
Volume
9.6719671472563E+20
Height
9508691.63219