19809985 is an odd 8-digits composite number following 19809984
and preceding 19809986 . In scientific notation, it is written as 1.9809985 × 10^7.
The sum of its digits is 49. It has a total of 4 prime factors and 16 positive divisors.
There are 14231808 positive integers (up to 19809985) that are relatively prime to 19809985.
19809985 has 16 divisors, whose sum is 26295696
The reverse of 19809985 is 58990891
Previous prime number is 37
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 49
Digital Root 4
Name
nineteen million eight hundred nine thousand nine hundred eighty-five
Scientific notation
1.9809985 × 10^7
Engineering notation
1.9809985 × 10^6
Prime Factorization
5 × 13 × 37 × 8237
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
19809985
Product of the distinct prime numbers
The prime factorization of 19809985 is 5 × 13 × 37 × 8237.
Since it has a total of 4 prime factors.
9 , 4 , 81 , 44 , 558 , 498 , 2845 , 3854 , 39016 , 48394 , 42811 , 674481 , 7086810 , 7027413 , 7435231 , 55158863 , 902883808 , 769738734 , 7251269980 , 2828531180
n×2
39619970
n×3
59429955
n×4
79239940
n×5
99049925
n÷2
9904992.5
n÷3
6603328.3333333
n÷3
4952496.25
n÷5
3961997
n2
392435505700225
n3
7.7741414813889E+21
n4
1.5400562613419E+29
n5
3.0508491436339E+36
2 √n
4450.8409317791
3 √n
270.57939137205
4 √n
66.71462307305
5 √n
28.798961639164
1 , 5 , 13 , 37 , 65 , 185 , 481 , 2405 , 8237 , 41185 , 107081 , 304769 , 535405 , 1523845 , 3961997 , 19809985
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-19809984
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 19809985 can be divided by 16 positive divisors.
The sum of these divisors (counting 19809985) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001011100100011011000001
3
Ternary
1101021110012011
4
Quaternary
1023210123001
5
Quinary
20032404420
6
Senary
1544332521
8
Octal
113443301
10
Decimal
19809985
12
Duodecimal
6774141
16
Hexadecimal
12e46c1
20
Vigesimal
63g4j5
36
Base36
bslhd
md5
6c02fa668fe60157818bcc4ccb6cc14a
sha1
c7568fc2d56e8ae7a76be9a1680ed235c7e92ef1
sha256
63727bcef54ccd83cddfa28e8b8cf31e37d4cde8bab3b393f085ca6fce795acc
sha512
0a072b0bca682c89e7895e43964d7a44a824bb9d6066d2dd16c33d85cff284fd25a88588e5556611b3a9132a49760bb848524ef77ba9d57f78e59f90f866516c
ripemd-160
edcaabb6d2c8d15c406e3a9a46541c23652bc06b
Diameter
39619970
Circumference
124469806.68745
Area
1.2328725017156E+15
Volume
3.2564247687865E+22
Surface area
4.9314900068625E+15
Circumference
124469806.68745
Perimeter
79239940
Area
392435505700225
Diagonal
28015549.457408
Surface area
2354613034201350
Volume
7.7741414813889E+21
Space diagonal
34311900.517177
Perimeter
59429955
Area
1.6992955864169E+14
Altitude
17155950.258589
Surface area
1.6992955864169E+14
Volume
9.1619135989895E+20
Height
9338516.4858025