18378421 is an odd 8-digits composite number following 18378420
and preceding 18378422 . In scientific notation, it is written as 1.8378421 × 10^7.
The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors.
There are 18039840 positive integers (up to 18378421) that are relatively prime to 18378421.
18378421 has 8 divisors, whose sum is 18719424
The reverse of 18378421 is 12487381
Previous prime number is 71
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
eighteen million three hundred seventy-eight thousand four hundred twenty-one
Scientific notation
1.8378421 × 10^7
Engineering notation
1.8378421 × 10^6
Prime Factorization
313 × 71 × 827
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
18378421
Product of the distinct prime numbers
The prime factorization of 18378421 is 313 × 71 × 827.
Since it has a total of 3 prime factors.
9 , 9 , 91 , 86 , 385 , 974 , 1548 , 6838 , 19028 , 71631 , 296494 , 393481 , 9289102 , 8275317 , 17807091 , 71137461 , 206334317 , 298921956 , 6901987330 , 4901633641
n×2
36756842
n×3
55135263
n×4
73513684
n×5
91892105
n÷2
9189210.5
n÷3
6126140.3333333
n÷3
4594605.25
n÷5
3675684.2
n2
337766358453241
n3
6.2076123352906E+21
n4
1.1408611290276E+29
n5
2.0967226131805E+36
2 √n
4287.0060648429
3 √n
263.89797959614
4 √n
65.475232453523
5 √n
28.370150466376
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
-18378420
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 18378421 can be divided by 8 positive divisors.
The sum of these divisors (counting 18378421) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000110000110111010110101
3
Ternary
1021120201110021
4
Quaternary
1012012322311
5
Quinary
14201102141
6
Senary
1453525141
8
Octal
106067265
10
Decimal
18378421
12
Duodecimal
61a37b1
16
Hexadecimal
1186eb5
20
Vigesimal
5eh611
36
Base36
axwvp
md5
e604c5207820ada41c4ca1aaf683973c
sha1
7355bfbbedb4a55cc90257a5b8461eaf45ba6932
sha256
3de35bf14bc76fc09c4eebed8890ae63ccb1d0fc99d89f8129f4422da07466a6
sha512
561a4469809f04ca739c236d81236daa911ded26ec5058f4bd34428247c5d3f6cb8089ab2bfac643cb0556ef1342ef672624756801d53209a43c5b1dc14d0701
ripemd-160
46afcb764f62d2bc9da919e8fb9c182d4ad9abce
Diameter
36756842
Circumference
115475024.79636
Area
1.0611243103465E+15
Volume
2.6002385745176E+22
Surface area
4.2444972413859E+15
Circumference
115475024.79636
Perimeter
73513684
Area
337766358453241
Diagonal
25991012.233203
Surface area
2026598150719446
Volume
6.2076123352906E+21
Space diagonal
31832358.934891
Perimeter
55135263
Area
1.4625712348213E+14
Altitude
15916179.467445
Surface area
1.4625712348213E+14
Volume
7.3157412954354E+20
Height
8663670.7444008