40905 is an odd 5-digits composite number following 40904
and preceding 40906 . In scientific notation, it is written as 4.0905 × 10^4.
The sum of its digits is 18. It has a total of 4 prime factors and 12 positive divisors.
There are 21600 positive integers (up to 40905) that are relatively prime to 40905.
40905 has 12 divisors, whose sum is 55692
The reverse of 40905 is 50904
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 5
Sum of Digits 18
Digital Root 9
Name
forty thousand nine hundred five
Scientific notation
4.0905 × 10^4
Engineering notation
4.0905 × 10^3
Prime Factorization
9 × 9 × 5 × 101
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
4545
Product of the distinct prime numbers
The prime factorization of 40905 is 9 × 9 × 5 × 101.
Since it has a total of 4 prime factors.
10 , 3 , 68 , 13 , 621 , 285 , 1078 , 2570 , 85940 , 42013 , 544683 , 91409 , 8031138 , 3743118 , 16855033 , 16131120 , 770461362 , 705561473 , 1359396683 , 5010922177
n×2
81810
n×3
122715
n×4
163620
n×5
204525
n÷2
20452.5
n÷3
13635
n÷3
10226.25
n÷5
8181
n2
1673219025
n3
68443024217625
n4
2799661905621950625
n5
1.1452017024947E+23
2 √n
202.2498454882
3 √n
34.455519235253
4 √n
14.221457220981
5 √n
8.3628687219194
1 , 5 , 9 , 45 , 81 , 101 , 405 , 505 , 909 , 4545 , 8181 , 40905
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-40904
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 40905 can be divided by 12 positive divisors.
The sum of these divisors (counting 40905) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001111111001001
3
Ternary
2002010000
4
Quaternary
21333021
5
Quinary
2302110
6
Senary
513213
8
Octal
117711
10
Decimal
40905
12
Duodecimal
1b809
16
Hexadecimal
9fc9
20
Vigesimal
5255
36
Base36
vk9
md5
52bfa4d6570bb8d6271bb1e78f1464d7
sha1
9eaabf1542db6539265f317509cea6498bdad789
sha256
dd3589cea5a1c1caa6f5214538e736b895d3e4da8285ca00b0fee3eebe4d94c1
sha512
df9a59f34937235c5e759d34c3b8dd7480c67b6cdcfeebd1946f269c13b80236be1ffeff85350a1bf64bf9bffa908ea5bfb23b97563dec44e4b02c34ddbd9330
ripemd-160
3c36a7b5c135113e7b32aced3bdbc59637c92646
Diameter
81810
Circumference
257013.69499018
Area
5256572596.7867
Volume
2.8669346942875E+14
Surface area
21026290387.147
Circumference
257013.69499018
Perimeter
163620
Area
1673219025
Diagonal
57848.405768871
Surface area
10039314150
Volume
68443024217625
Space diagonal
70849.538283605
Perimeter
122715
Area
724525090.87271
Altitude
35424.769141802
Surface area
724525090.87271
Volume
8066087758199.6
Height
19282.801922957