18997907 is an odd 8-digits composite number following 18997906
and preceding 18997908 . In scientific notation, it is written as 1.8997907 × 10^7.
The sum of its digits is 50. It has a total of 2 prime factors and 4 positive divisors.
There are 18985440 positive integers (up to 18997907) that are relatively prime to 18997907.
18997907 has 4 divisors, whose sum is 19010376
The reverse of 18997907 is 70979981
Previous prime number is 1777
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 50
Digital Root 5
Name
eighteen million nine hundred ninety-seven thousand nine hundred seven
Scientific notation
1.8997907 × 10^7
Engineering notation
1.8997907 × 10^6
Prime Factorization
1777 × 10691
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
18997907
Product of the distinct prime numbers
The prime factorization of 18997907 is 1777 × 10691.
Since it has a total of 2 prime factors.
2 , 10 , 88 , 15 , 736 , 873 , 9087 , 5413 , 82543 , 33978 , 579406 , 435418 , 224805 , 8434323 , 8256411 , 18038060 , 709664278 , 467864741 , 9037394044 , 7528104179
n×2
37995814
n×3
56993721
n×4
75991628
n×5
94989535
n÷2
9498953.5
n÷3
6332635.6666667
n÷3
4749476.75
n÷5
3799581.4
n2
360920470380649
n3
6.8567335306878E+21
n4
1.3026358593979E+29
n5
2.4747354911706E+36
2 √n
4358.658853363
3 √n
266.83036632879
4 √n
66.020139755707
5 √n
28.558878675367
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-18997906
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18997907 can be divided by 4 positive divisors.
The sum of these divisors (counting 18997907) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001000011110001010010011
3
Ternary
1022202012020012
4
Quaternary
1020132022103
5
Quinary
14330413112
6
Senary
1515105135
8
Octal
110361223
10
Decimal
18997907
12
Duodecimal
64421ab
16
Hexadecimal
121e293
20
Vigesimal
5ieef7
36
Base36
bb6vn
md5
79a365ff026eecd7854e7239c8aa796a
sha1
1aff997fc987629c219f122d1be33ce9989de157
sha256
db892fbb971d1561f9e04c6fd87885968d0c5af39dbe2b92f46a8996d0bbc6f7
sha512
c7f4ac1acb921c1c640c63b425981fdfe9a3523a3def77fb861e325629f3f607d8b01b108f045f54c59ef85e6a113f1ea33dcda82b3d74b371fed8041c2fa885
ripemd-160
b41121e2a5e6833feea0b23229d71a3c79a8f188
Diameter
37995814
Circumference
119367370.12956
Area
1.133865098278E+15
Volume
2.8721418250176E+22
Surface area
4.5354603931121E+15
Circumference
119367370.12956
Perimeter
75991628
Area
360920470380649
Diagonal
26867097.736103
Surface area
2165522822283894
Volume
6.8567335306878E+21
Space diagonal
32905340.161468
Perimeter
56993721
Area
1.5628314804774E+14
Altitude
16452670.080734
Surface area
1.5628314804774E+14
Volume
8.0807379605642E+20
Height
8955699.2453676