18085821 is an odd 8-digits composite number following 18085820
and preceding 18085822 . In scientific notation, it is written as 1.8085821 × 10^7.
The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors.
There are 10745280 positive integers (up to 18085821) that are relatively prime to 18085821.
18085821 has 16 divisors, whose sum is 26866560
The reverse of 18085821 is 12858081
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
eighteen million eighty-five thousand eight hundred twenty-one
Scientific notation
1.8085821 × 10^7
Engineering notation
1.8085821 × 10^6
Prime Factorization
3 × 29 × 13 × 15991
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
18085821
Product of the distinct prime numbers
The prime factorization of 18085821 is 3 × 29 × 13 × 15991.
Since it has a total of 4 prime factors.
1 , 2 , 37 , 61 , 385 , 774 , 6361 , 8798 , 56065 , 32774 , 833869 , 692555 , 2933612 , 9953638 , 70395890 , 62585170 , 333578380 , 928605828 , 7442093722 , 3008093234
n×2
36171642
n×3
54257463
n×4
72343284
n×5
90429105
n÷2
9042910.5
n÷3
6028607
n÷3
4521455.25
n÷5
3617164.2
n2
327096921244041
n3
5.9158163672708E+21
n4
1.0699239588733E+29
n5
1.9350453203794E+36
2 √n
4252.7427620302
3 √n
262.48998782674
4 √n
65.21305668369
5 √n
28.279234266776
1 , 3 , 13 , 29 , 39 , 87 , 377 , 1131 , 15991 , 47973 , 207883 , 463739 , 623649 , 1391217 , 6028607 , 18085821
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-18085820
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18085821 can be divided by 16 positive divisors.
The sum of these divisors (counting 18085821) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1000100111111011110111101
3
Ternary
1021000212002020
4
Quaternary
1010333132331
5
Quinary
14112221241
6
Senary
1443350353
8
Octal
104773675
10
Decimal
18085821
12
Duodecimal
60823b9
16
Hexadecimal
113f7bd
20
Vigesimal
5d0eb1
36
Base36
arn3x
md5
7bfb527daf7f2e7f0fbb9009749fdce1
sha1
8845616a66920ade7787c6f0c2d7518e7d14706a
sha256
35ec961b3fa8f8db06c97926177aa546b623a3646af2779284c88560a3a969d4
sha512
7009b0dab0e5e07460960d7bb7a52960b2e822371d9dc4412f1c3aeabece4eddfed4298d56a8494d0ffdee84b93d9d24c78b440d6858e515e0a2bb6d23c85023
ripemd-160
6eb218660f2b0e1d193b0c93485a729b68a6f557
Diameter
36171642
Circumference
113636564.77548
Area
1.0276052847921E+15
Volume
2.4780113652539E+22
Surface area
4.1104211391685E+15
Circumference
113636564.77548
Perimeter
72343284
Area
327096921244041
Diagonal
25577213.344852
Surface area
1962581527464246
Volume
5.9158163672708E+21
Space diagonal
31325560.868596
Perimeter
54257463
Area
1.4163712164851E+14
Altitude
15662780.434298
Surface area
1.4163712164851E+14
Volume
6.9718564492526E+20
Height
8525737.7816174