18393939 is an odd 8-digits composite number following 18393938
and preceding 18393940 . In scientific notation, it is written as 1.8393939 × 10^7.
The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors.
There are 12262608 positive integers (up to 18393939) that are relatively prime to 18393939.
18393939 has 8 divisors, whose sum is 27250320
The reverse of 18393939 is 93939381
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
eighteen million three hundred ninety-three thousand nine hundred thirty-nine
Scientific notation
1.8393939 × 10^7
Engineering notation
1.8393939 × 10^6
Prime Factorization
9 × 3 × 681257
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
18393939
Product of the distinct prime numbers
The prime factorization of 18393939 is 9 × 3 × 681257.
Since it has a total of 3 prime factors.
9 , 9 , 6 , 20 , 66 , 7 , 6402 , 9620 , 36944 , 2067 , 25667 , 560126 , 1492919 , 9488998 , 29267281 , 45930932 , 735921086 , 454952821 , 2159711157 , 3153554071
n×2
36787878
n×3
55181817
n×4
73575756
n×5
91969695
n÷2
9196969.5
n÷3
6131313
n÷3
4598484.75
n÷5
3678787.8
n2
338336991935721
n3
6.2233499911091E+21
n4
1.1447192011211E+29
n5
2.1055895157551E+36
2 √n
4288.8155707608
3 √n
263.97223365001
4 √n
65.489049243066
5 √n
28.374939772042
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
-18393938
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 18393939 can be divided by 8 positive divisors.
The sum of these divisors (counting 18393939) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000110001010101101010011
3
Ternary
1021121111202000
4
Quaternary
1012022231103
5
Quinary
14202101224
6
Senary
1454125043
8
Octal
106125523
10
Decimal
18393939
12
Duodecimal
61b0783
16
Hexadecimal
118ab53
20
Vigesimal
5ej4gj
36
Base36
ay8ur
md5
b2cc6bb4a848f517d7d139e4d8e8d2f8
sha1
52645ae28f9a6443e51eb74a25fad3f9b7c4c315
sha256
de7063d0a9afe32de13e5e8cf44595c4f17672b8f2f5238ef455dcd9700b4770
sha512
0d8e98a4a469d00fb5bbda6c7538383e839226d192d1ab6a4ebeeee205505abf8a8784ec0498633a4614e66294dc68f4fcdb5187d235b7c84b13ac69be117244
ripemd-160
a3a8c8cb3bdbb88c2126ba6a1e8cf2c4adbe542c
Diameter
36787878
Circumference
115572527.26596
Area
1.0629170083029E+15
Volume
2.6068307483715E+22
Surface area
4.2516680332117E+15
Circumference
115572527.26596
Perimeter
73575756
Area
338336991935721
Diagonal
26012957.999263
Surface area
2030021951614326
Volume
6.2233499911091E+21
Space diagonal
31859236.899323
Perimeter
55181817
Area
1.4650421502817E+14
Altitude
15929618.449661
Surface area
1.4650421502817E+14
Volume
7.3342883006842E+20
Height
8670985.9997545