20130991 is an odd 8-digits composite number following 20130990
and preceding 20130992 . In scientific notation, it is written as 2.0130991 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 19855152 positive integers (up to 20130991) that are relatively prime to 20130991.
20130991 has 4 divisors, whose sum is 20406832
The reverse of 20130991 is 19903102
Previous prime number is 73
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty million one hundred thirty thousand nine hundred ninety-one
Scientific notation
2.0130991 × 10^7
Engineering notation
2.0130991 × 10^6
Prime Factorization
73 × 275767
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20130991
Product of the distinct prime numbers
The prime factorization of 20130991 is 73 × 275767.
Since it has a total of 2 prime factors.
7 , 8 , 68 , 97 , 477 , 537 , 1921 , 9489 , 63793 , 44652 , 203610 , 995012 , 2346728 , 9247775 , 41790293 , 64074879 , 846142938 , 440507773 , 9458301303 , 6535331198
n×2
40261982
n×3
60392973
n×4
80523964
n×5
100654955
n÷2
10065495.5
n÷3
6710330.3333333
n÷3
5032747.75
n÷5
4026198.2
n2
405256798642081
n3
8.1582209661525E+21
n4
1.6423307284563E+29
n5
3.3061745113577E+36
2 √n
4486.7572922992
3 √n
272.03307970661
4 √n
66.983261284437
5 √n
28.891695627077
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
-20130990
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 20130991 can be divided by 4 positive divisors.
The sum of these divisors (counting 20130991) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110010110010101111
3
Ternary
1101212202112021
4
Quaternary
1030302302233
5
Quinary
20123142431
6
Senary
1555251011
8
Octal
114626257
10
Decimal
20130991
12
Duodecimal
68a9a67
16
Hexadecimal
1332caf
20
Vigesimal
65g79b
36
Base36
bzh67
md5
8a80163d5acfdecd914e38d27b8e2f9e
sha1
101daf0484cd156470d868019106454a5e9a5a23
sha256
5097425b66514376f2593c7b1e4257a50086dcd8422a9d3e589d76aef311dd80
sha512
c5406e6de91e197420dcbb0f1eecdc1304ca361822566f206417a05196e569c0aecfecca12fa66399f4060abcc907413082f4aef7867dcc861d7f2eb630a3e7f
ripemd-160
bb1d4609298f5d8ec704ec02175e3b5cacd39325
Diameter
40261982
Circumference
126486746.87016
Area
1.2731517814313E+15
Volume
3.4173076071503E+22
Surface area
5.0926071257251E+15
Circumference
126486746.87016
Perimeter
80523964
Area
405256798642081
Diagonal
28469520.496211
Surface area
2431540791852486
Volume
8.1582209661525E+21
Space diagonal
34867899.218712
Perimeter
60392973
Area
1.754813413402E+14
Altitude
17433949.609356
Surface area
1.754813413402E+14
Volume
9.6145556126412E+20
Height
9489840.1654036