21808047 is an odd 8-digits composite number following 21808046
and preceding 21808048 . In scientific notation, it is written as 2.1808047 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 14229272 positive integers (up to 21808047) that are relatively prime to 21808047.
21808047 has 8 divisors, whose sum is 29696256
The reverse of 21808047 is 74080812
Previous prime number is 47
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty-one million eight hundred eight thousand forty-seven
Scientific notation
2.1808047 × 10^7
Engineering notation
2.1808047 × 10^6
Prime Factorization
3 × 47 × 154667
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21808047
Product of the distinct prime numbers
The prime factorization of 21808047 is 3 × 47 × 154667.
Since it has a total of 3 prime factors.
4 , 6 , 64 , 73 , 604 , 752 , 5928 , 8844 , 52268 , 35064 , 657046 , 348182 , 3463041 , 584638 , 81496376 , 82198321 , 601593757 , 747837868 , 3776958004 , 8829452312
n×2
43616094
n×3
65424141
n×4
87232188
n×5
109040235
n÷2
10904023.5
n÷3
7269349
n÷3
5452011.75
n÷5
4361609.4
n2
475590913954209
n3
1.0371709004286E+22
n4
2.261867174358E+29
n5
4.9326905646156E+36
2 √n
4669.9086714838
3 √n
279.38661218243
4 √n
68.336730032127
5 √n
29.357789682468
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
-21808046
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 21808047 can be divided by 8 positive divisors.
The sum of these divisors (counting 21808047) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011001100001110101111
3
Ternary
1112000222000110
4
Quaternary
1103030032233
5
Quinary
21040324142
6
Senary
2055231103
8
Octal
123141657
10
Decimal
21808047
12
Duodecimal
7378493
16
Hexadecimal
14cc3af
20
Vigesimal
6g6027
36
Base36
czf73
md5
e2e9cab17bc76cf5a6ac8f3c1a64f69d
sha1
4b2da749ab6ea3c3860b0e047ba64d4af8be6188
sha256
98fc97001dafa3351a09c30ee3b077a3d6edabde031e87b17e86afbd245dfaa9
sha512
d730904bb79b6e01d9da54dc975456b16ad88673416a437f970eeefcf348df9f22249707e394b655c9b22642b7942988a7418950f9b39aba6d5eda75c555dd9f
ripemd-160
f53bebc8ed7cf5ace5ebdc22e39d4c8fc4fdbc29
Diameter
43616094
Circumference
137024000.48868
Area
1.4941129213926E+15
Volume
4.3444913084049E+22
Surface area
5.9764516855704E+15
Circumference
137024000.48868
Perimeter
87232188
Area
475590913954209
Diagonal
30841235.83627
Surface area
2853545483725254
Volume
1.0371709004286E+22
Space diagonal
37772645.41785
Perimeter
65424141
Area
2.059369066467E+14
Altitude
18886322.708925
Surface area
2.059369066467E+14
Volume
1.2223176282374E+21
Height
10280411.945423