21495971 is an odd 8-digits composite number following 21495970
and preceding 21495972 . In scientific notation, it is written as 2.1495971 × 10^7.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 18425112 positive integers (up to 21495971) that are relatively prime to 21495971.
21495971 has 4 divisors, whose sum is 24566832
The reverse of 21495971 is 17959412
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
twenty-one million four hundred ninety-five thousand nine hundred seventy-one
Scientific notation
2.1495971 × 10^7
Engineering notation
2.1495971 × 10^6
Prime Factorization
7 × 3070853
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21495971
Product of the distinct prime numbers
The prime factorization of 21495971 is 7 × 3070853.
Since it has a total of 2 prime factors.
10 , 7 , 62 , 13 , 87 , 984 , 5167 , 8662 , 11717 , 19275 , 213993 , 860646 , 3624386 , 2605675 , 47716492 , 16162676 , 193304234 , 921433080 , 6042299995 , 2259429673
n×2
42991942
n×3
64487913
n×4
85983884
n×5
107479855
n÷2
10747985.5
n÷3
7165323.6666667
n÷3
5373992.75
n÷5
4299194.2
n2
462076769232841
n3
9.9327888312028E+21
n4
2.1351494066466E+29
n5
4.5897109725943E+36
2 √n
4636.3747691488
3 √n
278.04751788539
4 √n
68.090930153353
5 √n
29.273281799789
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
-21495970
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 21495971 can be divided by 4 positive divisors.
The sum of these divisors (counting 21495971) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010000000000010100011
3
Ternary
1111110002221002
4
Quaternary
1102000002203
5
Quinary
21000332341
6
Senary
2044422215
8
Octal
122000243
10
Decimal
21495971
12
Duodecimal
724796b
16
Hexadecimal
14800a3
20
Vigesimal
6e6jib
36
Base36
csqeb
md5
262b21d3e48f24901d1900a9fee713fe
sha1
cbf6edf2ab9dd99bb10fd86592bfb2ae0bc98342
sha256
5a45a30d9d801ae5a757efe22c9b1e271253528bf099476568b7b50ea51d715a
sha512
188bf18adfa1928ba12dea162f831224476a900aadf5f3e004bf77a39c43b3d832c0a7569e9d1a94dc88ff49a1d47e15e4ea1cb7aa7733de8d3b0a779327e0d7
ripemd-160
6d83456006c4c028ecc7fc7311e58e4da92957a4
Diameter
42991942
Circumference
135063169.15076
Area
1.4516569836164E+15
Volume
4.1606368562354E+22
Surface area
5.8066279344656E+15
Circumference
135063169.15076
Perimeter
85983884
Area
462076769232841
Diagonal
30399893.724579
Surface area
2772460615397046
Volume
9.9327888312028E+21
Space diagonal
37232113.930027
Perimeter
64487913
Area
2.0008511032714E+14
Altitude
18616056.965014
Surface area
2.0008511032714E+14
Volume
1.1705903897729E+21
Height
10133297.908193