72905 is an odd 5-digits composite number following 72904
and preceding 72906 . In scientific notation, it is written as 7.2905 × 10^4.
The sum of its digits is 23. It has a total of 3 prime factors and 8 positive divisors.
There are 49968 positive integers (up to 72905) that are relatively prime to 72905.
72905 has 8 divisors, whose sum is 100032
The reverse of 72905 is 50927
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 5
Sum of Digits 23
Digital Root 5
Name
seventy-two thousand nine hundred five
Scientific notation
7.2905 × 10^4
Engineering notation
7.2905 × 10^3
Prime Factorization
5 × 7 × 2083
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
72905
Product of the distinct prime numbers
The prime factorization of 72905 is 5 × 7 × 2083.
Since it has a total of 3 prime factors.
2 , 10 , 67 , 63 , 982 , 198 , 6980 , 7907 , 13646 , 43239 , 691265 , 315587 , 2351877 , 5425421 , 46082497 , 92283505 , 866461946 , 406453980 , 9694312483 , 2656861250
n×2
145810
n×3
218715
n×4
291620
n×5
364525
n÷2
36452.5
n÷3
24301.666666667
n÷3
18226.25
n÷5
14581
n2
5315139025
n3
387500210617625
n4
2.8250702855078E+19
n5
2.0596174916495E+24
2 √n
270.0092591005
3 √n
41.775254540112
4 √n
16.431958468195
5 √n
9.3875327010361
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
-72904
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 72905 can be divided by 8 positive divisors.
The sum of these divisors (counting 72905) is 1, the average is 0.125.
Base
System
Value
2
Binary
10001110011001001
3
Ternary
10201000012
4
Quaternary
101303021
5
Quinary
4313110
6
Senary
1321305
8
Octal
216311
10
Decimal
72905
12
Duodecimal
36235
16
Hexadecimal
11cc9
20
Vigesimal
9255
36
Base36
1k95
md5
980d30c34b39c689d671421c8192ac4a
sha1
f88c22553100060b0630e6e4d26aac9ad9849be8
sha256
1cffcbfcd92d70dc2fa9e18f3ba5d330c43f8bc7cdd67775ea4832be29cb38c5
sha512
2403d88978330066c4b602c7f2a033ed45e731793039dca035c453bd734e1b4a157331c717bc8bd00c65d78f7fbe72c19b4ad825c806013a81123791e6ea45bd
ripemd-160
e773da119f4a6ab90c61aa19d6cee54ffb0c884b
Diameter
145810
Circumference
458075.62481993
Area
16698001713.748
Volume
1.6231570865878E+15
Surface area
66792006854.994
Circumference
458075.62481993
Perimeter
291620
Area
5315139025
Diagonal
103103.23976481
Surface area
31890834150
Volume
387500210617625
Space diagonal
126275.16412581
Perimeter
218715
Area
2301522710.148
Altitude
63137.582062904
Surface area
2301522710.148
Volume
45667337773156
Height
34367.74658827