209217921 is an odd 9-digits composite number following 209217920
and preceding 209217922 . In scientific notation, it is written as 2.09217921 × 10^8.
The sum of its digits is 33. It has a total of 2 prime factors and 4 positive divisors.
There are 126798720 positive integers (up to 209217921) that are relatively prime to 209217921.
209217921 has 4 divisors, whose sum is 215557892
The reverse of 209217921 is 129712902
Previous prime number is 33
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 33
Digital Root 6
Name
two hundred nine million two hundred seventeen thousand nine hundred twenty-one
Scientific notation
2.09217921 × 10^8
Engineering notation
2.09217921 × 10^6
Prime Factorization
33 × 6339937
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
209217921
Product of the distinct prime numbers
The prime factorization of 209217921 is 33 × 6339937.
Since it has a total of 2 prime factors.
4 , 7 , 15 , 28 , 570 , 11 , 7721 , 4904 , 85962 , 79528 , 256572 , 146655 , 4060521 , 7507866 , 94860379 , 4816896 , 155615385 , 848503673 , 7980451925 , 3864100482
n×2
418435842
n×3
627653763
n×4
836871684
n×5
1046089605
n÷2
104608960.5
n÷3
69739307
n÷3
52304480.25
n÷5
41843584.2
n2
43772138467562241
n3
9.1579158079075E+24
n4
1.9160001060234E+33
n5
4.00861558818E+41
2 √n
14464.367286542
3 √n
593.65340174032
4 √n
120.26789798838
5 √n
46.144482139114
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
-209217920
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 209217921 can be divided by 4 positive divisors.
The sum of these divisors (counting 209217921) is 1, the average is 0.25.
Base
System
Value
2
Binary
1100011110000110100110000001
3
Ternary
112120200101000220
4
Quaternary
30132012212001
5
Quinary
412024433141
6
Senary
32432133253
8
Octal
1436064601
10
Decimal
209217921
12
Duodecimal
5a097229
16
Hexadecimal
c786981
20
Vigesimal
357c4g1
36
Base36
3gk9kx
md5
936b8ab5b8cfff5eacae2f2ca4f947d7
sha1
21e3e93d643b02575c8e8f3a228b9af88716de23
sha256
b6c505244bf58d8d8c1f78699de38978f57b699c5c5b841082c298b2dc58a32e
sha512
9e226a9e4f6f428bb63f5838b3023b0b5a80ed31a5b39f6cb5b80848261bb55a05499f4325f941876f2224a7482c0420fda39b3cbb5f9719a43e34dbb85ff61c
ripemd-160
49dc69c02e00304fd1b16744f0e95de922e7d237
Diameter
418435842
Circumference
1314554967.2259
Area
1.3751422864161E+17
Volume
3.8360588032421E+25
Surface area
5.5005691456643E+17
Circumference
1314554967.2259
Perimeter
836871684
Area
43772138467562241
Diagonal
295878821.3697
Surface area
262632830805373446
Volume
9.1579158079075E+24
Space diagonal
362376069.02593
Perimeter
627653763
Area
1.8953891945439E+16
Altitude
181188034.51297
Surface area
1.8953891945439E+16
Volume
1.0792707282178E+24
Height
98626273.789901