17985 is an odd 5-digits composite number following 17984
and preceding 17986 . In scientific notation, it is written as 1.7985 × 10^4.
The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors.
There are 8640 positive integers (up to 17985) that are relatively prime to 17985.
17985 has 16 divisors, whose sum is 31680
The reverse of 17985 is 58971
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 5
Sum of Digits 30
Digital Root 3
Name
seventeen thousand nine hundred eighty-five
Scientific notation
1.7985 × 10^4
Engineering notation
1.7985 × 10^3
Prime Factorization
3 × 11 × 5 × 109
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
17985
Product of the distinct prime numbers
The prime factorization of 17985 is 3 × 11 × 5 × 109.
Since it has a total of 4 prime factors.
10 , 9 , 24 , 21 , 876 , 908 , 4077 , 3835 , 87294 , 65479 , 677590 , 747891 , 1804236 , 1936278 , 37848858 , 47853408 , 746727389 , 774648118 , 8478928553 , 2658057574
n×2
35970
n×3
53955
n×4
71940
n×5
89925
n÷2
8992.5
n÷3
5995
n÷3
4496.25
n÷5
3597
n2
323460225
n3
5817432146625
n4
104626517157050625
n5
1.8817079110696E+21
2 √n
134.10816529951
3 √n
26.200132081769
4 √n
11.5805079897
5 √n
7.0954850351344
1 , 3 , 5 , 11 , 15 , 33 , 55 , 109 , 165 , 327 , 545 , 1199 , 1635 , 3597 , 5995 , 17985
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
-17984
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 17985 can be divided by 16 positive divisors.
The sum of these divisors (counting 17985) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100011001000001
3
Ternary
220200010
4
Quaternary
10121001
5
Quinary
1033420
6
Senary
215133
8
Octal
43101
10
Decimal
17985
12
Duodecimal
a4a9
16
Hexadecimal
4641
20
Vigesimal
24j5
36
Base36
dvl
md5
5143cf8618ed4a4d16edfebaf7728139
sha1
03355d8a8beabaaaaa54bb99c253724be3ab123b
sha256
896ba209d8b0c5cdfdacb8b2d45dae08ba41a114dde0bc6ac633dd8a772d66f3
sha512
f2e4e516edcdb338fd5be7054203b6df5d72fb04d91f1035f13450859a28fbe5c763afa2121b230e9c93d5806348a89e67aa0f07ab585777cb792eeb2570f3b7
ripemd-160
79777670f34deb766efc3d609c6a010e13429a68
Diameter
35970
Circumference
113003.08774962
Area
1016180266.5885
Volume
24368002792792
Surface area
4064721066.354
Circumference
113003.08774962
Perimeter
71940
Area
323460225
Diagonal
25434.63091928
Surface area
1940761350
Volume
5817432146625
Space diagonal
31150.933774126
Perimeter
53955
Area
140062385.98192
Altitude
15575.466887063
Surface area
140062385.98192
Volume
685590953328.53
Height
8478.2103064267