191921 is an odd 6-digits composite number following 191920
and preceding 191922 . In scientific notation, it is written as 1.91921 × 10^5.
The sum of its digits is 23. It has a total of 3 prime factors and 8 positive divisors.
There are 180000 positive integers (up to 191921) that are relatively prime to 191921.
191921 has 8 divisors, whose sum is 204288
The reverse of 191921 is 129191
Previous prime number is 31
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 23
Digital Root 5
Name
one hundred ninety-one thousand nine hundred twenty-one
Scientific notation
1.91921 × 10^5
Engineering notation
1.91921 × 10^3
Prime Factorization
41 × 31 × 151
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
191921
Product of the distinct prime numbers
The prime factorization of 191921 is 41 × 31 × 151.
Since it has a total of 3 prime factors.
9 , 9 , 71 , 37 , 69 , 583 , 5777 , 1168 , 14304 , 14487 , 407689 , 917062 , 5638659 , 4050366 , 86462943 , 21702429 , 854061844 , 982422667 , 1957952638 , 1527103469
n×2
383842
n×3
575763
n×4
767684
n×5
959605
n÷2
95960.5
n÷3
63973.666666667
n÷3
47980.25
n÷5
38384.2
n2
36833670241
n3
7069154826322961
n4
1.3567192634227E+21
n5
2.6038291775535E+26
2 √n
438.08789072514
3 √n
57.682069385456
4 √n
20.930549221775
5 √n
11.392643289443
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
-191920
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 191921 can be divided by 8 positive divisors.
The sum of these divisors (counting 191921) is 1, the average is 0.125.
Base
System
Value
2
Binary
101110110110110001
3
Ternary
100202021012
4
Quaternary
232312301
5
Quinary
22120141
6
Senary
4040305
8
Octal
566661
10
Decimal
191921
12
Duodecimal
93095
16
Hexadecimal
2edb1
20
Vigesimal
13jg1
36
Base36
4435
md5
10a7cce942f959bcd28eb43c7a125222
sha1
04e78626cdbe61a1d429c041e00f50b04f07e1b9
sha256
41b5e92616867c9d571e811ff54dd49f93654b4fe6fd8578e51afe1206339356
sha512
b547d8e372e0bc6d05e2868a964da84a4d7495a63955a01419ddfd1dc347468e70e90bf7478b5f8065dd5b9008027b5fff179f64c4b309422f2efcca818cbcef
ripemd-160
d8fc59a385d8de1c78d5c951dc6e22e50b591081
Diameter
383842
Circumference
1205875.2073392
Area
115716387833.87
Volume
2.961120649262E+16
Surface area
462865551335.5
Circumference
1205875.2073392
Perimeter
767684
Area
36833670241
Diagonal
271417.28110421
Surface area
221002021446
Volume
7069154826322961
Space diagonal
332416.92303943
Perimeter
575763
Area
15949447071.662
Altitude
166208.46151971
Surface area
15949447071.662
Volume
8.331078858251E+14
Height
90472.427034736