221389 is an odd 6-digits composite number following 221388
and preceding 221390 . In scientific notation, it is written as 2.21389 × 10^5.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 189756 positive integers (up to 221389) that are relatively prime to 221389.
221389 has 4 divisors, whose sum is 253024
The reverse of 221389 is 983122
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 25
Digital Root 7
Name
two hundred twenty-one thousand three hundred eighty-nine
Scientific notation
2.21389 × 10^5
Engineering notation
2.21389 × 10^3
Prime Factorization
7 × 31627
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
221389
Product of the distinct prime numbers
The prime factorization of 221389 is 7 × 31627.
Since it has a total of 2 prime factors.
7 , 10 , 18 , 69 , 850 , 342 , 5735 , 4841 , 50149 , 14726 , 920489 , 552826 , 6497243 , 7646994 , 91914789 , 42743246 , 625970307 , 948965736 , 1451592210 , 512959327
n×2
442778
n×3
664167
n×4
885556
n×5
1106945
n÷2
110694.5
n÷3
73796.333333333
n÷3
55347.25
n÷5
44277.8
n2
49013089321
n3
10850958831686869
n4
2.4022829247883E+21
n5
5.3183901443596E+26
2 √n
470.51992518915
3 √n
60.494888350771
4 √n
21.6914712546
5 √n
11.722796006907
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
-221388
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 221389 can be divided by 4 positive divisors.
The sum of these divisors (counting 221389) is 1, the average is 0.25.
Base
System
Value
2
Binary
110110000011001101
3
Ternary
102020200121
4
Quaternary
312003031
5
Quinary
24041024
6
Senary
4424541
8
Octal
660315
10
Decimal
221389
12
Duodecimal
a8151
16
Hexadecimal
360cd
20
Vigesimal
17d99
36
Base36
4qtp
md5
20e3f04a17822029d707be9946725fb3
sha1
8184f72616725cf36a9878548a64e76bace5fa9d
sha256
fe8aff9536e46f92a16ce5fe6ac2339264ab3ac1f14e82af6f25d89cc03ed40f
sha512
896788305c891cb0ec9578f167c617e48785448ce07fd3b93eeb7c383dd337212c6ed74ca301e61a662a19ef6c1d02fca2ac4297571c852fe08764128a1e26a5
ripemd-160
8f1d3fa72523395f4d17c17c35fe8da60bb4443d
Diameter
442778
Circumference
1391028.1119712
Area
153979161340.59
Volume
4.545239006671E+16
Surface area
615916645362.38
Circumference
1391028.1119712
Perimeter
885556
Area
49013089321
Diagonal
313091.32636022
Surface area
294078535926
Volume
10850958831686869
Space diagonal
383456.99623687
Perimeter
664167
Area
21223290234.971
Altitude
191728.49811843
Surface area
21223290234.971
Volume
1.2787977620436E+15
Height
104363.77545341