218221 is an odd 6-digits composite number following 218220
and preceding 218222 . In scientific notation, it is written as 2.18221 × 10^5.
The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors.
There are 213532 positive integers (up to 218221) that are relatively prime to 218221.
218221 has 4 divisors, whose sum is 222912
The reverse of 218221 is 122812
Previous prime number is 47
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 16
Digital Root 7
Name
two hundred eighteen thousand two hundred twenty-one
Scientific notation
2.18221 × 10^5
Engineering notation
2.18221 × 10^3
Prime Factorization
47 × 4643
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
218221
Product of the distinct prime numbers
The prime factorization of 218221 is 47 × 4643.
Since it has a total of 2 prime factors.
9 , 2 , 88 , 68 , 152 , 31 , 7003 , 1794 , 23716 , 20120 , 960481 , 958004 , 2665577 , 8870858 , 42415848 , 38404816 , 161243063 , 205510888 , 4007669311 , 18711143
n×2
436442
n×3
654663
n×4
872884
n×5
1091105
n÷2
109110.5
n÷3
72740.333333333
n÷3
54555.25
n÷5
43644.2
n2
47620404841
n3
10391772364807861
n4
2.2677029572207E+21
n5
4.9486040702767E+26
2 √n
467.1413062447
3 √n
60.204947294508
4 √n
21.613451974284
5 √n
11.689052475784
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
-218220
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 218221 can be divided by 4 positive divisors.
The sum of these divisors (counting 218221) is 1, the average is 0.25.
Base
System
Value
2
Binary
110101010001101101
3
Ternary
102002100021
4
Quaternary
311101231
5
Quinary
23440341
6
Senary
4402141
8
Octal
652155
10
Decimal
218221
12
Duodecimal
a6351
16
Hexadecimal
3546d
20
Vigesimal
175b1
36
Base36
4odp
md5
78bcbbe34e7cb00a1f213bd8a9e3df73
sha1
2d5e6aa53509443dbbb15a6ca1b10995e6223e48
sha256
de100dafe25ec0e8d5e60464f758c66ce86618a0ecda5136306b1576815793c8
sha512
6a50176db1f40b9bfb668917d6031b03b0d81cedad8fdb6ec9631b128aebeaacf53973da0b6d906f2618bda74488a44d64a57fca7fc1d33f898158d7daeb75b1
ripemd-160
78edd2aceaebf88c2b19ceccd0a0e8c1fe4c1ba6
Diameter
436442
Circumference
1371122.980918
Area
149603914009.46
Volume
4.3528954292077E+16
Surface area
598415656037.83
Circumference
1371122.980918
Perimeter
872884
Area
47620404841
Diagonal
308611.09779462
Surface area
285722429046
Volume
10391772364807861
Space diagonal
377969.85927849
Perimeter
654663
Area
20620240165.403
Altitude
188984.92963924
Surface area
20620240165.403
Volume
1.2246821179504E+15
Height
102870.36593154