19906 is an even 5-digits composite number following 19905
and preceding 19907 . In scientific notation, it is written as 1.9906 × 10^4.
The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors.
There are 9648 positive integers (up to 19906) that are relatively prime to 19906.
19906 has 8 divisors, whose sum is 30780
The reverse of 19906 is 60991
Previous prime number is 37
Is Prime? no
Number parity even
Number length 5
Sum of Digits 25
Digital Root 7
Name
nineteen thousand nine hundred six
Scientific notation
1.9906 × 10^4
Engineering notation
1.9906 × 10^3
Prime Factorization
2 × 37 × 269
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
19906
Product of the distinct prime numbers
The prime factorization of 19906 is 2 × 37 × 269.
Since it has a total of 3 prime factors.
7 , 2 , 3 , 27 , 846 , 65 , 7981 , 7866 , 74510 , 68732 , 174659 , 407129 , 4192449 , 8411711 , 76384107 , 25646283 , 455992508 , 614120510 , 7739369980 , 3824161431
n×2
39812
n×3
59718
n×4
79624
n×5
99530
n÷2
9953
n÷3
6635.3333333333
n÷3
4976.5
n÷5
3981.2
n2
396248836
n3
7887729329416
n4
157013140031354896
n5
3.1255035654642E+21
2 √n
141.08862463005
3 √n
27.101583491574
4 √n
11.87807327095
5 √n
7.2409708633935
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
-19905
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 19906 can be divided by 8 positive divisors.
The sum of these divisors (counting 19906) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110111000010
3
Ternary
1000022021
4
Quaternary
10313002
5
Quinary
1114111
6
Senary
232054
8
Octal
46702
10
Decimal
19906
12
Duodecimal
b62a
16
Hexadecimal
4dc2
20
Vigesimal
29f6
36
Base36
fcy
md5
0cb656f78993ef2542ab838079ec9426
sha1
3e0120fb1046ae21f223e486849edc3fa5bbe72a
sha256
eb4f56b901c90ae1997085cb575130bfe6664f34feee66ab9f9eb7694f2aae18
sha512
69ccb3e0a650594a265699e4d5e366e1c18b2817e54726d5a7cc25c32e184a2be20fa78f01ad550802502e83a9047d05d627654e5c6887eb20ce95a9b85befa0
ripemd-160
581af1d44a973c1f9f6573ed84da31391e870ac3
Diameter
39812
Circumference
125073.08672472
Area
1244852432.1711
Volume
33040043353064
Surface area
4979409728.6844
Circumference
125073.08672472
Perimeter
79624
Area
396248836
Diagonal
28151.335172599
Surface area
2377493016
Volume
7887729329416
Space diagonal
34478.203375466
Perimeter
59718
Area
171580779.09801
Altitude
17239.101687733
Surface area
171580779.09801
Volume
929577816165.68
Height
9383.7783908663