20121903 is an odd 8-digits composite number following 20121902
and preceding 20121904 . In scientific notation, it is written as 2.0121903 × 10^7.
The sum of its digits is 18. It has a total of 3 prime factors and 6 positive divisors.
There are 13414596 positive integers (up to 20121903) that are relatively prime to 20121903.
20121903 has 6 divisors, whose sum is 29064984
The reverse of 20121903 is 30912102
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9
Name
twenty million one hundred twenty-one thousand nine hundred three
Scientific notation
2.0121903 × 10^7
Engineering notation
2.0121903 × 10^6
Prime Factorization
3 × 3 × 2235767
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
6707301
Product of the distinct prime numbers
The prime factorization of 20121903 is 3 × 3 × 2235767.
Since it has a total of 3 prime factors.
8 , 2 , 72 , 23 , 564 , 908 , 1474 , 2434 , 72360 , 84898 , 742719 , 907086 , 2979152 , 1203521 , 21468044 , 4316559 , 179227325 , 830929896 , 9938040336 , 5734360374
n×2
40243806
n×3
60365709
n×4
80487612
n×5
100609515
n÷2
10060951.5
n÷3
6707301
n÷3
5030475.75
n÷5
4024380.6
n2
404890980341409
n3
8.1471770320047E+21
n4
1.6393670596183E+29
n5
3.2987184955034E+36
2 √n
4485.744419826
3 √n
271.99213771247
4 √n
66.975700219005
5 √n
28.889086563703
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20121902
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20121903 can be divided by 6 positive divisors.
The sum of these divisors (counting 20121903) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
1001100110000100100101111
3
Ternary
1101212022001200
4
Quaternary
1030300210233
5
Quinary
20122400103
6
Senary
1555140543
8
Octal
114604457
10
Decimal
20121903
12
Duodecimal
68a4753
16
Hexadecimal
133092f
20
Vigesimal
65f4f3
36
Base36
bza5r
md5
a71808e1cd5b52d3f294e59ce8b052df
sha1
9be870ecdc10fb38e5bb1da4e8c447131fbf7c24
sha256
c672cda4e17f0fc22543990bbee88704e99825d3bdd097f6752e1dd52748d4cb
sha512
8b9923c9a7e5300d12c96e05d044b2e1edc4549fa7a24ed278ce472976483b8a3d20b50480819b71c3d75035facc331f4bb5997bfc255388dc4d650b537b7886
ripemd-160
1676197e408b37dbd39a305ecf71c238ef6a1591
Diameter
40243806
Circumference
126429645.28209
Area
1.2720025293453E+15
Volume
3.4126815348322E+22
Surface area
5.0880101173814E+15
Circumference
126429645.28209
Perimeter
80487612
Area
404890980341409
Diagonal
28456668.123356
Surface area
2429345882048454
Volume
8.1471770320047E+21
Space diagonal
34852158.340973
Perimeter
60365709
Area
1.7532293736942E+14
Altitude
17426079.170486
Surface area
1.7532293736942E+14
Volume
9.6015402114297E+20
Height
9485556.0411186