20010991 is an odd 8-digits composite number following 20010990
and preceding 20010992 . In scientific notation, it is written as 2.0010991 × 10^7.
The sum of its digits is 22. It has a total of 3 prime factors and 8 positive divisors.
There are 14392800 positive integers (up to 20010991) that are relatively prime to 20010991.
20010991 has 8 divisors, whose sum is 22071168
The reverse of 20010991 is 19901002
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty million ten thousand nine hundred ninety-one
Scientific notation
2.0010991 × 10^7
Engineering notation
2.0010991 × 10^6
Prime Factorization
91 × 11 × 19991
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20010991
Product of the distinct prime numbers
The prime factorization of 20010991 is 91 × 11 × 19991.
Since it has a total of 3 prime factors.
7 , 3 , 1 , 53 , 373 , 92 , 4801 , 9772 , 65677 , 37635 , 347132 , 616259 , 5685365 , 3449982 , 86430646 , 59096876 , 615541740 , 775488548 , 8849720523 , 816745426
n×2
40021982
n×3
60032973
n×4
80043964
n×5
100054955
n÷2
10005495.5
n÷3
6670330.3333333
n÷3
5002747.75
n÷5
4002198.2
n2
400439760802081
n3
8.0131964494526E+21
n4
1.6035200203123E+29
n5
3.2088024694789E+36
2 √n
4473.3646173769
3 √n
271.49147616044
4 √n
66.88321626071
5 √n
28.857168764183
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20010990
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20010991 can be divided by 8 positive divisors.
The sum of these divisors (counting 20010991) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001100010101011111101111
3
Ternary
1101122122220211
4
Quaternary
1030111133233
5
Quinary
20110322431
6
Senary
1552523251
8
Octal
114253757
10
Decimal
20010991
12
Duodecimal
6850527
16
Hexadecimal
13157ef
20
Vigesimal
65179b
36
Base36
bwwkv
md5
afefa021069e96ef728e576179aea856
sha1
751f027f3437a203fb2eed2de68040cd7bfa42f0
sha256
89538c2a6d8a337fc35fc0836019b9e1e514bd64f885f3b6b3ed7018a23f2ff8
sha512
8cb9ba59bccb60d53d80ee991a8349c8355ab20c22e84a368c8eabb844748a925cfa41f97d3a5ef51a034aa638bfbd91eda18b4bb55aa3dd7bd30b4b6b03ac96
ripemd-160
06e0fb8ca51f63c1475ce0ca1157020dd96454a8
Diameter
40021982
Circumference
125732764.6333
Area
1.2580186107411E+15
Volume
3.3565598796496E+22
Surface area
5.0320744429643E+15
Circumference
125732764.6333
Perimeter
80043964
Area
400439760802081
Diagonal
28299814.868726
Surface area
2402638564812486
Volume
8.0131964494526E+21
Space diagonal
34660053.121804
Perimeter
60032973
Area
1.7339550276998E+14
Altitude
17330026.560902
Surface area
1.7339550276998E+14
Volume
9.4436425806465E+20
Height
9433271.6229086