20108921 is an odd 8-digits composite number following 20108920
and preceding 20108922 . In scientific notation, it is written as 2.0108921 × 10^7.
The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors.
There are 17236212 positive integers (up to 20108921) that are relatively prime to 20108921.
20108921 has 4 divisors, whose sum is 22981632
The reverse of 20108921 is 12980102
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty million one hundred eight thousand nine hundred twenty-one
Scientific notation
2.0108921 × 10^7
Engineering notation
2.0108921 × 10^6
Prime Factorization
7 × 2872703
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20108921
Product of the distinct prime numbers
The prime factorization of 20108921 is 7 × 2872703.
Since it has a total of 2 prime factors.
1 , 8 , 14 , 15 , 260 , 605 , 5603 , 9299 , 90651 , 9359 , 71680 , 786489 , 8441550 , 5422053 , 14668908 , 11672532 , 126116559 , 699705238 , 2286489957 , 7558171174
n×2
40217842
n×3
60326763
n×4
80435684
n×5
100544605
n÷2
10054460.5
n÷3
6702973.6666667
n÷3
5027230.25
n÷5
4021784.2
n2
404368703784241
n3
8.1314183192697E+21
n4
1.6351404860015E+29
n5
3.2880910856905E+36
2 √n
4484.297157861
3 √n
271.93363162309
4 √n
66.9648949664
5 √n
28.885357940777
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
-20108920
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 20108921 can be divided by 4 positive divisors.
The sum of these divisors (counting 20108921) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100101101011001111001
3
Ternary
1101211122020212
4
Quaternary
1030231121321
5
Quinary
20121441141
6
Senary
1555000505
8
Octal
114553171
10
Decimal
20108921
12
Duodecimal
6899135
16
Hexadecimal
132d679
20
Vigesimal
65dc61
36
Base36
bz055
md5
0b08432a429b7de9d7d36aa50b865edc
sha1
d2521a69d38252be4bcc82dda9e886b93dd66ad9
sha256
b3a1230cc5abd6c0f75133d6a282b7cf5eadc70d42a900dda2256e9e4c2711a7
sha512
525fea63aa3ea4f5bd746696b8f0d25123864878a71947d29e26c91314fbb155ac26905351bf4434ebc641c6edd82562964c655ec519d3c4616c9a69f47c6d51
ripemd-160
52bd811e92e6327d4d3a5eac24042c5304f6fc81
Diameter
40217842
Circumference
126348076.97044
Area
1.2703617491502E+15
Volume
3.4060805406778E+22
Surface area
5.0814469966008E+15
Circumference
126348076.97044
Perimeter
80435684
Area
404368703784241
Diagonal
28438308.802889
Surface area
2426212222705446
Volume
8.1314183192697E+21
Space diagonal
34829672.857389
Perimeter
60326763
Area
1.7509678498627E+14
Altitude
17414836.428694
Surface area
1.7509678498627E+14
Volume
9.5829683903669E+20
Height
9479436.2676297