19720121 is an odd 8-digits composite number following 19720120
and preceding 19720122 . In scientific notation, it is written as 1.9720121 × 10^7.
The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors.
There are 19646544 positive integers (up to 19720121) that are relatively prime to 19720121.
19720121 has 4 divisors, whose sum is 19793700
The reverse of 19720121 is 12102791
Previous prime number is 269
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
nineteen million seven hundred twenty thousand one hundred twenty-one
Scientific notation
1.9720121 × 10^7
Engineering notation
1.9720121 × 10^6
Prime Factorization
269 × 73309
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
19720121
Product of the distinct prime numbers
The prime factorization of 19720121 is 269 × 73309.
Since it has a total of 2 prime factors.
7 , 10 , 44 , 79 , 123 , 454 , 9848 , 8466 , 1329 , 87295 , 938639 , 267925 , 2426713 , 873069 , 25103060 , 13343767 , 298768274 , 554167600 , 9924111038 , 6892989320
n×2
39440242
n×3
59160363
n×4
78880484
n×5
98600605
n÷2
9860060.5
n÷3
6573373.6666667
n÷3
4930030.25
n÷5
3944024.2
n2
388883172254641
n3
7.6688232117254E+21
n4
1.5123012166283E+29
n5
2.9822762980358E+36
2 √n
4440.7342861288
3 √n
270.16962820484
4 √n
66.638834669649
5 √n
28.772785963933
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
-19720120
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 19720121 can be divided by 4 positive divisors.
The sum of these divisors (counting 19720121) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001011001110011110111001
3
Ternary
1101002212220212
4
Quaternary
1023032132321
5
Quinary
20022020441
6
Senary
1542400505
8
Octal
113163671
10
Decimal
19720121
12
Duodecimal
6730135
16
Hexadecimal
12ce7b9
20
Vigesimal
635061
36
Base36
bqo55
md5
758810ff5fd1eca085794a063e8fab86
sha1
123fab90cb0d66bb365d3df0916d672cb1373b31
sha256
fafed92f45e2e77218d7498caf183845fe6b87730b7ec6a3dd6cc43549d9cf5f
sha512
46be0ab5cf6b5872a43c16450acf9e821e1d6c069304a60ff766c449f8f2a8899a61901081fd17a7ef781ec70a2ad1ee8be6e337e4102abd681903ef061bf202
ripemd-160
cf7f4bdd1c60b0e8b74d90e80528481f9f404222
Diameter
39440242
Circumference
123905174.523
Area
1.2217125170599E+15
Volume
3.2123091551514E+22
Surface area
4.8868500682395E+15
Circumference
123905174.523
Perimeter
78880484
Area
388883172254641
Diagonal
27888462.569838
Surface area
2333299033527846
Volume
7.6688232117254E+21
Space diagonal
34156251.503406
Perimeter
59160363
Area
1.683913531384E+14
Altitude
17078125.751703
Surface area
1.683913531384E+14
Volume
9.0377948278863E+20
Height
9296154.1899462