1998421 is an odd 7-digits composite number following 1998420
and preceding 1998422 . In scientific notation, it is written as 1.998421 × 10^6.
The sum of its digits is 34. It has a total of 3 prime factors and 6 positive divisors.
There are 1954800 positive integers (up to 1998421) that are relatively prime to 1998421.
1998421 has 6 divisors, whose sum is 2042466
The reverse of 1998421 is 1248991
Previous prime number is 181
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 34
Digital Root 7
Name
one million nine hundred ninety-eight thousand four hundred twenty-one
Scientific notation
1.998421 × 10^6
Engineering notation
1.998421 × 10^6
Prime Factorization
61 × 181 × 181
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
11041
Product of the distinct prime numbers
The prime factorization of 1998421 is 61 × 181 × 181.
Since it has a total of 3 prime factors.
5 , 2 , 72 , 99 , 964 , 128 , 6657 , 5892 , 67864 , 930 , 215012 , 434993 , 2683329 , 9733743 , 80092879 , 57131294 , 280520846 , 418347034 , 6226992520 , 4617877190
n×2
3996842
n×3
5995263
n×4
7993684
n×5
9992105
n÷2
999210.5
n÷3
666140.33333333
n÷3
499605.25
n÷5
399684.2
n2
3993686493241
n3
7981066955509172461
n4
1.5949531806296E+25
n5
3.1873879301869E+31
2 √n
1413.6551913391
3 √n
125.95893933756
4 √n
37.598606241975
5 √n
18.202766451133
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
-1998420
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 1998421 can be divided by 6 positive divisors.
The sum of these divisors (counting 1998421) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
111100111111001010101
3
Ternary
10202112022121
4
Quaternary
13213321111
5
Quinary
1002422141
6
Senary
110455541
8
Octal
7477125
10
Decimal
1998421
12
Duodecimal
8045b1
16
Hexadecimal
1e7e55
20
Vigesimal
c9g11
36
Base36
16tzp
md5
bc427707864a04baa0a7b759319cc488
sha1
47fdadf3f472f8597ee2879f7a222e5d216728be
sha256
8af292fe6f9bd83440c30ee3118638e24ed370246e4a06e5545d575f52941f5b
sha512
fd796b0742d6f566e212f167b6baafc236c3e114dd8d341cc54803a6fde38e90006aa223d1fc9de4b569f38f2ec086e3ba142edcf92612cf62971893d34f8921
ripemd-160
1c178c43c98322b5cceb8337a454e3b80a2b3527
Diameter
3996842
Circumference
12556449.464759
Area
12546536147907
Volume
3.3431015086981E+19
Surface area
50186144591627
Circumference
12556449.464759
Perimeter
7993684
Area
3993686493241
Diagonal
2826194.0815312
Surface area
23962118959446
Volume
7981066955509172461
Space diagonal
3461366.7069126
Perimeter
5995263
Area
1729316978948.7
Altitude
1730683.3534563
Surface area
1729316978948.7
Volume
9.4057776089073E+17
Height
942064.69384373