21751639 is an odd 8-digits composite number following 21751638
and preceding 21751640 . In scientific notation, it is written as 2.1751639 × 10^7.
The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors.
There are 17209584 positive integers (up to 21751639) that are relatively prime to 21751639.
21751639 has 8 divisors, whose sum is 25132928
The reverse of 21751639 is 93615712
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million seven hundred fifty-one thousand six hundred thirty-nine
Scientific notation
2.1751639 × 10^7
Engineering notation
2.1751639 × 10^6
Prime Factorization
91 × 7 × 34147
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21751639
Product of the distinct prime numbers
The prime factorization of 21751639 is 91 × 7 × 34147.
Since it has a total of 3 prime factors.
5 , 8 , 36 , 46 , 132 , 902 , 2733 , 3117 , 30125 , 6590 , 703441 , 280098 , 5893907 , 2109880 , 81583280 , 60399661 , 679770548 , 371473143 , 9058895958 , 8422168108
n×2
43503278
n×3
65254917
n×4
87006556
n×5
108758195
n÷2
10875819.5
n÷3
7250546.3333333
n÷3
5437909.75
n÷5
4350327.8
n2
473133799186321
n3
1.0291435598599E+22
n4
2.2385559193248E+29
n5
4.8692260238467E+36
2 √n
4663.8652424786
3 √n
279.1455200239
4 √n
68.292497702739
5 √n
29.342586760155
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
-21751638
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 21751639 can be divided by 8 positive divisors.
The sum of these divisors (counting 21751639) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010111110011101010111
3
Ternary
1111221002122021
4
Quaternary
1102332131113
5
Quinary
21032023024
6
Senary
2054114011
8
Octal
122763527
10
Decimal
21751639
12
Duodecimal
734b907
16
Hexadecimal
14be757
20
Vigesimal
6fij1j
36
Base36
cy7o7
md5
ef2780c0417c31dd09416bc60d81ba28
sha1
603c5b38f9f0bdea43a799305584d13a03253b22
sha256
51e1cd7173ab5ad1c2b7be5e421b88fb40e0ce53af92fc71a18a179b90a7bb90
sha512
17366ca5d7023d063ebf9dff9f18eee0846a508926bf088a253b25cb7fd66ec8940666319f682d2f4fea266128aee7457ddd3d5be4d90496d3950cfe457e3360
ripemd-160
590bbf19467c1601369dd4e1d03697d0eb6da7ae
Diameter
43503278
Circumference
136669578.57187
Area
1.4863936676888E+15
Volume
4.3108664628603E+22
Surface area
5.9455746707551E+15
Circumference
136669578.57187
Perimeter
87006556
Area
473133799186321
Diagonal
30761462.877644
Surface area
2838802795117926
Volume
1.0291435598599E+22
Space diagonal
37674943.895897
Perimeter
65254917
Area
2.048729447422E+14
Altitude
18837471.947948
Surface area
2.048729447422E+14
Volume
1.2128573166524E+21
Height
10253820.959215