20148991 is an odd 8-digits composite number following 20148990
and preceding 20148992 . In scientific notation, it is written as 2.0148991 × 10^7.
The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors.
There are 20140000 positive integers (up to 20148991) that are relatively prime to 20148991.
20148991 has 4 divisors, whose sum is 20157984
The reverse of 20148991 is 19984102
Previous prime number is 4751
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty million one hundred forty-eight thousand nine hundred ninety-one
Scientific notation
2.0148991 × 10^7
Engineering notation
2.0148991 × 10^6
Prime Factorization
4751 × 4241
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20148991
Product of the distinct prime numbers
The prime factorization of 20148991 is 4751 × 4241.
Since it has a total of 2 prime factors.
2 , 3 , 48 , 88 , 922 , 257 , 5597 , 5813 , 60286 , 78829 , 998456 , 991724 , 4083725 , 7411049 , 98335520 , 77922348 , 343134152 , 804226318 , 242189003 , 9744209120
n×2
40297982
n×3
60446973
n×4
80595964
n×5
100744955
n÷2
10074495.5
n÷3
6716330.3333333
n÷3
5037247.75
n÷5
4029798.2
n2
405981838318081
n3
8.1801244064345E+21
n4
1.6482125304413E+29
n5
3.3209819441949E+36
2 √n
4488.7627471275
3 √n
272.11413444686
4 √n
66.998229432781
5 √n
28.896860446047
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
-20148990
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 20148991 can be divided by 4 positive divisors.
The sum of these divisors (counting 20148991) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110111001011111111
3
Ternary
1101220200012221
4
Quaternary
1030313023333
5
Quinary
20124231431
6
Senary
1555510211
8
Octal
114671377
10
Decimal
20148991
12
Duodecimal
68b8367
16
Hexadecimal
13372ff
20
Vigesimal
65ic9b
36
Base36
bzv27
md5
9ab4a80ac8cd889e6f8676ab6afd5af4
sha1
f28e7f56abbc9b47a71a2da2afc39689b22d84bd
sha256
86d4f7d1ebd57881dfc3d290d44098b1c797ae48a35d94a97f5520bc55f734aa
sha512
992ae86e0018519d3308f3d989f429d93a8e8118888d8e784f9351f22f3dca969cc283cd5c714cc5f7269a01d4c3537d531653d76ab6916edfd99e4d2c58fa0a
ripemd-160
d4344fd54c8e7ec63256c354e521e8afba57710d
Diameter
40297982
Circumference
126599844.20569
Area
1.275429560751E+15
Volume
3.4264824987607E+22
Surface area
5.1017182430038E+15
Circumference
126599844.20569
Perimeter
80595964
Area
405981838318081
Diagonal
28494976.340333
Surface area
2435891029908486
Volume
8.1801244064345E+21
Space diagonal
34899076.133248
Perimeter
60446973
Area
1.7579529272928E+14
Altitude
17449538.066624
Surface area
1.7579529272928E+14
Volume
9.6403690645657E+20
Height
9498325.4467778