1998405 is an odd 7-digits composite number following 1998404
and preceding 1998406 . In scientific notation, it is written as 1.998405 × 10^6.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 1048320 positive integers (up to 1998405) that are relatively prime to 1998405.
1998405 has 8 divisors, whose sum is 2046528
The reverse of 1998405 is 5048991
Previous prime number is 113
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 36
Digital Root 9
Name
one million nine hundred ninety-eight thousand four hundred five
Scientific notation
1.998405 × 10^6
Engineering notation
1.998405 × 10^6
Prime Factorization
135 × 113 × 131
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
1998405
Product of the distinct prime numbers
The prime factorization of 1998405 is 135 × 113 × 131.
Since it has a total of 3 prime factors.
8 , 1 , 13 , 40 , 334 , 557 , 8275 , 7705 , 31336 , 36750 , 855948 , 419081 , 8101544 , 7708219 , 45025177 , 91309986 , 236356597 , 301795655 , 4314105763 , 1294557171
n×2
3996810
n×3
5995215
n×4
7993620
n×5
9992025
n÷2
999202.5
n÷3
666135
n÷3
499601.25
n÷5
399681
n2
3993622544025
n3
7980875260092280125
n4
1.5949021024145E+25
n5
3.1872603359756E+31
2 √n
1413.6495322392
3 √n
125.95860318077
4 √n
37.598530985122
5 √n
18.202737303601
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
-1998404
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 1998405 can be divided by 8 positive divisors.
The sum of these divisors (counting 1998405) is 1, the average is 0.125.
Base
System
Value
2
Binary
111100111111001000101
3
Ternary
10202112022000
4
Quaternary
13213321011
5
Quinary
1002422110
6
Senary
110455513
8
Octal
7477105
10
Decimal
1998405
12
Duodecimal
804599
16
Hexadecimal
1e7e45
20
Vigesimal
c9g05
36
Base36
16tz9
md5
543cd10ee3c7b17d4f5ebe63a0d8e272
sha1
cb9eaf4bdc9b82f35e5b16aa17aaa0e119cfabc4
sha256
4e3faaf17f352da768385c8b1459ee05d9d4353de171b989b8f9c49ce58e1880
sha512
f4ca8be2a08f6b6b0b3611a574b82003337c74e12ff6419aaa5f22e32b0a0b230e007677dc18a86e274501063d43f85451d85908b1ef06bbd4c3782c42d4d423
ripemd-160
731f48ac84a9d5a2d418376fe67f8f27b8e3ae5a
Diameter
3996810
Circumference
12556348.933794
Area
12546335245520
Volume
3.3430212115097E+19
Surface area
50185340982078
Circumference
12556348.933794
Perimeter
7993620
Area
3993622544025
Diagonal
2826171.4541142
Surface area
23961735264150
Volume
7980875260092280125
Space diagonal
3461338.9940997
Perimeter
5995215
Area
1729289288125.9
Altitude
1730669.4970498
Surface area
1729289288125.9
Volume
9.405551693692E+17
Height
942057.1513714