18085281 is an odd 8-digits composite number following 18085280
and preceding 18085282 . In scientific notation, it is written as 1.8085281 × 10^7.
The sum of its digits is 33. It has a total of 2 prime factors and 4 positive divisors.
There are 12056852 positive integers (up to 18085281) that are relatively prime to 18085281.
18085281 has 4 divisors, whose sum is 24113712
The reverse of 18085281 is 18258081
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
eighteen million eighty-five thousand two hundred eighty-one
Scientific notation
1.8085281 × 10^7
Engineering notation
1.8085281 × 10^6
Prime Factorization
3 × 6028427
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
18085281
Product of the distinct prime numbers
The prime factorization of 18085281 is 3 × 6028427.
Since it has a total of 2 prime factors.
3 , 7 , 80 , 100 , 429 , 416 , 952 , 1960 , 40184 , 27765 , 743073 , 267253 , 8991001 , 5120733 , 56385374 , 959669 , 327967441 , 666840467 , 8139009572 , 7411597008
n×2
36170562
n×3
54255843
n×4
72341124
n×5
90426405
n÷2
9042640.5
n÷3
6028427
n÷3
4521320.25
n÷5
3617056.2
n2
327077388848961
n3
5.9152864860797E+21
n4
1.0697961829625E+29
n5
1.9347564581605E+36
2 √n
4252.6792731171
3 √n
262.48737535656
4 √n
65.212569901186
5 √n
28.279065394499
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
-18085280
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 18085281 can be divided by 4 positive divisors.
The sum of these divisors (counting 18085281) is 1, the average is 0.25.
Base
System
Value
2
Binary
1000100111111010110100001
3
Ternary
1021000211100020
4
Quaternary
1010333112201
5
Quinary
14112212111
6
Senary
1443344053
8
Octal
104772641
10
Decimal
18085281
12
Duodecimal
6082029
16
Hexadecimal
113f5a1
20
Vigesimal
5d0d41
36
Base36
armox
md5
041f899792a02519412f077459221b11
sha1
f511736f4f2ec8d035e032d9e98427cba67bb428
sha256
566e8ccab6cbde50975966489ab004a91a0dee9eac75c30669a3fa72d1770189
sha512
79708f4879795b7ebb53860fb6dcca7b1d0f4bab034ceae88bf581e8a35fc5804ffb2a8992d20aa75eec147e1f9cd04cb985fa10a35158a10c1b9e429ebf12b0
ripemd-160
9a3f1aa71dba0ca7ca603d8d2aa3298ea18efd68
Diameter
36170562
Circumference
113633171.85541
Area
1.0275439219632E+15
Volume
2.4777894091396E+22
Surface area
4.1101756878529E+15
Circumference
113633171.85541
Perimeter
72341124
Area
327077388848961
Diagonal
25576449.669528
Surface area
1962464333093766
Volume
5.9152864860797E+21
Space diagonal
31324625.56116
Perimeter
54255843
Area
1.4162866387334E+14
Altitude
15662312.78058
Surface area
1.4162866387334E+14
Volume
6.9712319782802E+20
Height
8525483.2231762