18238213 is an odd 8-digits composite number following 18238212
and preceding 18238214 . In scientific notation, it is written as 1.8238213 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 15512640 positive integers (up to 18238213) that are relatively prime to 18238213.
18238213 has 8 divisors, whose sum is 21003840
The reverse of 18238213 is 31283281
Previous prime number is 131
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
eighteen million two hundred thirty-eight thousand two hundred thirteen
Scientific notation
1.8238213 × 10^7
Engineering notation
1.8238213 × 10^6
Prime Factorization
7 × 131 × 19889
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
18238213
Product of the distinct prime numbers
The prime factorization of 18238213 is 7 × 131 × 19889.
Since it has a total of 3 prime factors.
9 , 9 , 73 , 56 , 87 , 638 , 9654 , 5752 , 66088 , 26421 , 527113 , 776820 , 4437949 , 5352665 , 81206307 , 61534615 , 606900302 , 193260348 , 4840162460 , 4672322496
n×2
36476426
n×3
54714639
n×4
72952852
n×5
91191065
n÷2
9119106.5
n÷3
6079404.3333333
n÷3
4559553.25
n÷5
3647642.6
n2
332632413433369
n3
6.0666208069018E+21
n4
1.1064432246651E+29
n5
2.0179547203849E+36
2 √n
4270.6220858325
3 √n
263.22517786042
4 √n
65.349996831159
5 √n
28.326730890244
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
-18238212
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 18238213 can be divided by 8 positive divisors.
The sum of these divisors (counting 18238213) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000101100100101100000101
3
Ternary
1021022121010101
4
Quaternary
1011210230011
5
Quinary
14132110323
6
Senary
1450524101
8
Octal
105445405
10
Decimal
18238213
12
Duodecimal
6136631
16
Hexadecimal
1164b05
20
Vigesimal
5djfad
36
Base36
auwp1
md5
4d746b8d50aefcbe9af1f876e3c7cb40
sha1
1ed6fc29d69dd31ab3edcaed65abb7b5ea4f4159
sha256
0caebc8b5b30b20a1de467517cb865777f8bfdf1e479120dff31753bb5272fd7
sha512
89a04ef2773dc88f391f8db692c56319771f428bb0a78a2151848fa158e8894fb2397ce1c2864ef7ca8e3376782fe425bdc39e4fe88ae0a5f73d0c485a98d8c1
ripemd-160
aa3cf203ac9e86b852d0e09836febc5f465906bb
Diameter
36476426
Circumference
114594071.95081
Area
1.0449955463881E+15
Volume
2.5411801812104E+22
Surface area
4.1799821855525E+15
Circumference
114594071.95081
Perimeter
72952852
Area
332632413433369
Diagonal
25792728.178049
Surface area
1995794480600214
Volume
6.0666208069018E+21
Space diagonal
31589511.555263
Perimeter
54714639
Area
1.4403406007771E+14
Altitude
15794755.777632
Surface area
1.4403406007771E+14
Volume
7.1495811857462E+20
Height
8597576.0593498