21471381 is an odd 8-digits composite number following 21471380
and preceding 21471382 . In scientific notation, it is written as 2.1471381 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 6 positive divisors.
There are 14314248 positive integers (up to 21471381) that are relatively prime to 21471381.
21471381 has 6 divisors, whose sum is 31014230
The reverse of 21471381 is 18317412
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million four hundred seventy-one thousand three hundred eighty-one
Scientific notation
2.1471381 × 10^7
Engineering notation
2.1471381 × 10^6
Prime Factorization
3 × 3 × 2385709
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
7157127
Product of the distinct prime numbers
The prime factorization of 21471381 is 3 × 3 × 2385709.
Since it has a total of 3 prime factors.
7 , 3 , 47 , 21 , 206 , 541 , 1116 , 5911 , 71413 , 42889 , 325040 , 565424 , 9059162 , 7284588 , 15491582 , 57346401 , 174096017 , 936964491 , 7399472111 , 7889029086
n×2
42942762
n×3
64414143
n×4
85885524
n×5
107356905
n÷2
10735690.5
n÷3
7157127
n÷3
5367845.25
n÷5
4294276.2
n2
461020202047161
n3
9.8987404068516E+21
n4
2.1253962669561E+29
n5
4.5635193023791E+36
2 √n
4633.7221539492
3 √n
277.94145464183
4 √n
68.071448889746
5 √n
29.266581385081
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21471380
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21471381 can be divided by 6 positive divisors.
The sum of these divisors (counting 21471381) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
1010001111010000010010101
3
Ternary
1111101212012100
4
Quaternary
1101322002111
5
Quinary
20444041011
6
Senary
2044112313
8
Octal
121720225
10
Decimal
21471381
12
Duodecimal
7235699
16
Hexadecimal
147a095
20
Vigesimal
6e3i91
36
Base36
cs7f9
md5
d6689a3c82801dd4d975705f2551a727
sha1
232429e9e0a0210f34925017c1882d070af6ea9f
sha256
fc4a696d0e2d39b9a78a0c51dcbe191f04f774ce590b20a529e0fa666063c988
sha512
9eb33eb4679a364f827d4c0d95a2913b5d172d4209ff2565b30bbeb0d8673d0896511515a51fcc562c4fb2a4deb9a0e2c079a9ee0f095803b2a66470a0a67a1e
ripemd-160
21d9f87c5cd3e2b76adac2240b298ef30d968dd4
Diameter
42942762
Circumference
134908665.62405
Area
1.4483376799078E+15
Volume
4.1463746855943E+22
Surface area
5.7933507196314E+15
Circumference
134908665.62405
Perimeter
85885524
Area
461020202047161
Diagonal
30365118.21308
Surface area
2766121212282966
Volume
9.8987404068516E+21
Space diagonal
37189522.800669
Perimeter
64414143
Area
1.9962760331534E+14
Altitude
18594761.400335
Surface area
1.9962760331534E+14
Volume
1.1665777444817E+21
Height
10121706.071027