21081430 is an even 8-digits composite number following 21081429
and preceding 21081431 . In scientific notation, it is written as 2.1081430 × 10^7.
The sum of its digits is 19. It has a total of 4 prime factors and 16 positive divisors.
There are 8337472 positive integers (up to 21081430) that are relatively prime to 21081430.
21081430 has 16 divisors, whose sum is 38374560
The reverse of 21081430 is 03418012
Previous prime number is 89
Is Prime? no
Number parity even
Number length 8
Sum of Digits 19
Digital Root 1
Name
twenty-one million eighty-one thousand four hundred thirty
Scientific notation
2.1081430 × 10^7
Engineering notation
2.1081430 × 10^6
Prime Factorization
2 × 5 × 89 × 23687
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21081430
Product of the distinct prime numbers
The prime factorization of 21081430 is 2 × 5 × 89 × 23687.
Since it has a total of 4 prime factors.
7 , 2 , 52 , 6 , 893 , 651 , 1613 , 8522 , 36982 , 18841 , 879409 , 877212 , 2891692 , 8987922 , 86128417 , 32820544 , 627448422 , 242539956 , 9923777882 , 9307591248
n×2
42162860
n×3
63244290
n×4
84325720
n×5
105407150
n÷2
10540715
n÷3
7027143.3333333
n÷3
5270357.5
n÷5
4216286
n2
444426690844900
n3
9.3691501731784E+21
n4
1.9751508353535E+29
n5
4.1639004074946E+36
2 √n
4591.4518401046
3 √n
276.24855960429
4 √n
67.760252656735
5 √n
29.159496005519
1 , 2 , 5 , 10 , 89 , 178 , 445 , 890 , 23687 , 47374 , 118435 , 236870 , 2108143 , 4216286 , 10540715 , 21081430
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21081429
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21081430 can be divided by 16 positive divisors.
The sum of these divisors (counting 21081430) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010000011010110101010110
3
Ternary
1110200001021201
4
Quaternary
1100122311112
5
Quinary
20344101210
6
Senary
2031503114
8
Octal
120326526
10
Decimal
21081430
12
Duodecimal
7087a9a
16
Hexadecimal
141ad56
20
Vigesimal
6bf3ba
36
Base36
cjuja
md5
c5c60474e6a88dbb75e3afe90c41fd69
sha1
c5fee6977e707e36923c6eb132f3e03e74182f3c
sha256
cec68ff64018914d3af5a301c62c379e8d3af8a5b5a2b7a46c3604305d7902d9
sha512
d5ea98425d82318f893c46e2c135df694414c2add4d35eb7bb1a67d8d6ca732b17e4612de251694ba263d0d8c0690695272c5009ec47ec993ddbae0cb937de5f
ripemd-160
0ccfacc29c35a2f4905ec3f4d9ff321b9d3f5438
Diameter
42162860
Circumference
132458531.23033
Area
1.3962076270176E+15
Volume
3.9245404472582E+22
Surface area
5.5848305080702E+15
Circumference
132458531.23033
Perimeter
84325720
Area
444426690844900
Diagonal
29813644.220219
Surface area
2666560145069400
Volume
9.3691501731784E+21
Space diagonal
36514107.856207
Perimeter
63244290
Area
1.9244240219577E+14
Altitude
18257053.928103
Surface area
1.9244240219577E+14
Volume
1.1041649369016E+21
Height
9937881.4067397