19908 is an even 5-digits composite number following 19907
and preceding 19909 . In scientific notation, it is written as 1.9908 × 10^4.
The sum of its digits is 27. It has a total of 5 prime factors and 24 positive divisors.
There are 5616 positive integers (up to 19908) that are relatively prime to 19908.
19908 has 24 divisors, whose sum is 49280
The reverse of 19908 is 80991
Previous prime number is 3
Is Prime? no
Number parity even
Number length 5
Sum of Digits 27
Digital Root 9
Name
nineteen thousand nine hundred eight
Scientific notation
1.9908 × 10^4
Engineering notation
1.9908 × 10^3
Prime Factorization
2 × 2 × 21 × 3 × 79
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
9954
Product of the distinct prime numbers
The prime factorization of 19908 is 2 × 2 × 21 × 3 × 79.
Since it has a total of 5 prime factors.
6 , 5 , 73 , 49 , 946 , 651 , 2143 , 8472 , 49871 , 25346 , 995267 , 937631 , 4665105 , 1547299 , 86894977 , 62204209 , 388671682 , 96122415 , 6718477955 , 5810335175
n×2
39816
n×3
59724
n×4
79632
n×5
99540
n÷2
9954
n÷3
6636
n÷3
4977
n÷5
3981.6
n2
396328464
n3
7890107061312
n4
157076251376599296
n5
3.1270740124053E+21
2 √n
141.09571219566
3 √n
27.102491113259
4 √n
11.878371613805
5 √n
7.2411163608289
1 , 2 , 3 , 4 , 6 , 12 , 21 , 42 , 63 , 79 , 84 , 126 , 158 , 237 , 252 , 316 , 474 , 948 , 1659 , 3318 , 4977 , 6636 , 9954 , 19908
24 divisors
τ
Total Divisors
24
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-19907
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.041666666666667
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
24
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 19908 can be divided by 24 positive divisors.
The sum of these divisors (counting 19908) is 1, the average is 0.041666666666667.
Base
System
Value
2
Binary
100110111000100
3
Ternary
1000022100
4
Quaternary
10313010
5
Quinary
1114113
6
Senary
232100
8
Octal
46704
10
Decimal
19908
12
Duodecimal
b630
16
Hexadecimal
4dc4
20
Vigesimal
29f8
36
Base36
fd0
md5
3e0cb4a1171e1be5a03dbd5d46c09ac1
sha1
15dca3f5802a352410e6f6a4f99732dd56deea77
sha256
5a3718cdc68f590870015f63f48a3d0840545cb8495469d392f44ec3bf0cc03b
sha512
064fe02e639d1eb7c5bd458b0f580a97ceaf41ed6aa0ed696a3adfe4e057bf4d9dbbc5591fb6386d1e401fa8c27bd4eccfa1304efcb071a2fed3bc0b738d01b3
ripemd-160
3aa51d5dd124d8632b9c48897a75e5d401823d61
Diameter
39816
Circumference
125085.65309533
Area
1245102590.9109
Volume
33050003173140
Surface area
4980410363.6437
Circumference
125085.65309533
Perimeter
79632
Area
396328464
Diagonal
28154.163599724
Surface area
2377970784
Volume
7890107061312
Space diagonal
34481.667477081
Perimeter
59724
Area
171615259.03343
Altitude
17240.833738541
Surface area
171615259.03343
Volume
929858034556.93
Height
9384.7211999079