1997905 is an odd 7-digits composite number following 1997904
and preceding 1997906 . In scientific notation, it is written as 1.997905 × 10^6.
The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors.
There are 1264320 positive integers (up to 1997905) that are relatively prime to 1997905.
1997905 has 16 divisors, whose sum is 2951424
The reverse of 1997905 is 5097991
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 40
Digital Root 4
Name
one million nine hundred ninety-seven thousand nine hundred five
Scientific notation
1.997905 × 10^6
Engineering notation
1.997905 × 10^6
Prime Factorization
5 × 7 × 13 × 4391
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1997905
Product of the distinct prime numbers
The prime factorization of 1997905 is 5 × 7 × 13 × 4391.
Since it has a total of 4 prime factors.
3 , 1 , 36 , 57 , 835 , 262 , 4963 , 7456 , 14554 , 45626 , 266780 , 366701 , 3345653 , 6129363 , 20962059 , 35857072 , 684198689 , 753754270 , 1979585944 , 6125326787
n×2
3995810
n×3
5993715
n×4
7991620
n×5
9989525
n÷2
998952.5
n÷3
665968.33333333
n÷3
499476.25
n÷5
399581
n2
3991624389025
n3
7974886324954992625
n4
1.5933065263059E+25
n5
3.1832750754392E+31
2 √n
1413.4726739488
3 √n
125.94809737659
4 √n
37.5961789807
5 √n
18.20182634915
1 , 5 , 7 , 13 , 35 , 65 , 91 , 455 , 4391 , 21955 , 30737 , 57083 , 153685 , 285415 , 399581 , 1997905
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
-1997904
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 1997905 can be divided by 16 positive divisors.
The sum of these divisors (counting 1997905) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111100111110001010001
3
Ternary
10202111121111
4
Quaternary
13213301101
5
Quinary
1002413110
6
Senary
110453321
8
Octal
7476121
10
Decimal
1997905
12
Duodecimal
804241
16
Hexadecimal
1e7c51
20
Vigesimal
c9ef5
36
Base36
16tld
md5
bf0e901f66983608f59e6021142fa0b8
sha1
fd28f3e93253f98f039edf98bc70e86d0082b22a
sha256
602d0ec8cfe3254a7769a485d02bb0369cd5091a935ad272ec5525155f5471b9
sha512
23bffcf8051f7de444464e81b2290d22b21c20d8a1a5b0fdbee1077aeef95acbe94dc9ff00aae5b96b20918471674785705c6b78358b4f921fe8c1b51973d167
ripemd-160
c9e794bce82b8081336acce8d91633aaf848ad88
Diameter
3995810
Circumference
12553207.341141
Area
12540057856451
Volume
3.3405125722256E+19
Surface area
50160231425803
Circumference
12553207.341141
Perimeter
7991620
Area
3991624389025
Diagonal
2825464.347333
Surface area
23949746334150
Volume
7974886324954992625
Space diagonal
3460472.9686959
Perimeter
5993715
Area
1728424061630.6
Altitude
1730236.4843479
Surface area
1728424061630.6
Volume
9.3984936659459E+17
Height
941821.44911101