19998999 is an odd 8-digits composite number following 19998998
and preceding 19999000 . In scientific notation, it is written as 1.9998999 × 10^7.
The sum of its digits is 63. It has a total of 4 prime factors and 16 positive divisors.
There are 12594960 positive integers (up to 19998999) that are relatively prime to 19998999.
19998999 has 16 divisors, whose sum is 23485440
The reverse of 19998999 is 99989991
Previous prime number is 1667
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 63
Digital Root 9
Name
nineteen million nine hundred ninety-eight thousand nine hundred ninety-nine
Scientific notation
1.9998999 × 10^7
Engineering notation
1.9998999 × 10^6
Prime Factorization
31 × 9 × 1667 × 43
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
19998999
Product of the distinct prime numbers
The prime factorization of 19998999 is 31 × 9 × 1667 × 43.
Since it has a total of 4 prime factors.
10 , 1 , 90 , 12 , 630 , 732 , 2875 , 4337 , 79217 , 61669 , 846429 , 488536 , 8480470 , 1013924 , 1191227 , 46048420 , 32345629 , 523233715 , 4147098712 , 3066448581
n×2
39997998
n×3
59996997
n×4
79995996
n×5
99994995
n÷2
9999499.5
n÷3
6666333
n÷3
4999749.75
n÷5
3999799.8
n2
399959961002001
n3
7.9987988601191E+21
n4
1.5996797040472E+29
n5
3.1991992801561E+36
2 √n
4472.0240383969
3 √n
271.43723303055
4 √n
66.87319372063
5 √n
28.853709283841
1 , 9 , 31 , 43 , 279 , 387 , 1333 , 1667 , 11997 , 15003 , 51677 , 71681 , 465093 , 645129 , 2222111 , 19998999
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
-19998998
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 19998999 can be divided by 16 positive divisors.
The sum of these divisors (counting 19998999) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001100010010100100010111
3
Ternary
1101122001110200
4
Quaternary
1030102210113
5
Quinary
20104431444
6
Senary
1552351543
8
Octal
114224427
10
Decimal
19998999
12
Duodecimal
68455b3
16
Hexadecimal
1312917
20
Vigesimal
64jh9j
36
Base36
bwnbr
md5
d364c6ed06daab5c8262590985d673d7
sha1
2f5d58fa30b427711efc51133cd329cccc652f52
sha256
a366549e811ecc8d628375eb50f2c5ccba4cae36c3137bdd586f7037499a98be
sha512
4013209e5ca0171b2f411790d4f90e0fcedfdf39f3fa90e67c7d22adad17b9d228eb5d620f0ab90b010a3c8714eeed59a373bd20b4c7ea6f17ab5d39406f1ed1
ripemd-160
c5f405d78801cbd6a9018bf0650cb586b3886c0e
Diameter
39997998
Circumference
125657416.6751
Area
1.2565112752139E+15
Volume
3.3505290315323E+22
Surface area
5.0260451008558E+15
Circumference
125657416.6751
Perimeter
79995996
Area
399959961002001
Diagonal
28282855.619686
Surface area
2399759766012006
Volume
7.9987988601191E+21
Space diagonal
34639282.368519
Perimeter
59996997
Area
1.7318774336218E+14
Altitude
17319641.18426
Surface area
1.7318774336218E+14
Volume
9.4266748588957E+20
Height
9427618.5398953