21756021 is an odd 8-digits composite number following 21756020
and preceding 21756022 . In scientific notation, it is written as 2.1756021 × 10^7.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 12432000 positive integers (up to 21756021) that are relatively prime to 21756021.
21756021 has 8 divisors, whose sum is 33152064
The reverse of 21756021 is 12065712
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million seven hundred fifty-six thousand twenty-one
Scientific notation
2.1756021 × 10^7
Engineering notation
2.1756021 × 10^6
Prime Factorization
3 × 7 × 1036001
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21756021
Product of the distinct prime numbers
The prime factorization of 21756021 is 3 × 7 × 1036001.
Since it has a total of 3 prime factors.
9 , 1 , 51 , 99 , 877 , 229 , 8176 , 4103 , 70051 , 51790 , 361635 , 64970 , 7189581 , 6158473 , 14007003 , 30213423 , 971213844 , 683426061 , 1158842784 , 613220775
n×2
43512042
n×3
65268063
n×4
87024084
n×5
108780105
n÷2
10878010.5
n÷3
7252007
n÷3
5439005.25
n÷5
4351204.2
n2
473324449752441
n3
1.0297656668628E+22
n4
2.2403603473345E+29
n5
4.8741326764177E+36
2 √n
4664.3350008335
3 √n
279.16426395298
4 √n
68.295936927708
5 √n
29.343768913419
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
-21756020
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 21756021 can be divided by 8 positive divisors.
The sum of these divisors (counting 21756021) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010111111100001110101
3
Ternary
1111221022122120
4
Quaternary
1102333201311
5
Quinary
21032143041
6
Senary
2054150153
8
Octal
122774165
10
Decimal
21756021
12
Duodecimal
7352359
16
Hexadecimal
14bf875
20
Vigesimal
6fja11
36
Base36
cyb1x
md5
fe2e9fd187bdc8ebbdfcab3795d38e10
sha1
3a595805a0cff3aaa904ad303021a425119280a9
sha256
9a47d08a7b4fb63e6a53d4c85a92517c42d02bbdf6c15f4cc7738771ee3e9684
sha512
a21e1f1751559ea55ec89a63795f143f5392928ea93e434abd71bb45a8f1e1e1fd67892b6fded616018a8bf6a8b108b97084286a94e79c7d434accb07c0d1932
ripemd-160
bc5dabcd603a0179fbd9abebe8237607afeec1f1
Diameter
43512042
Circumference
136697111.48989
Area
1.4869926141067E+15
Volume
4.31347233858E+22
Surface area
5.9479704564268E+15
Circumference
136697111.48989
Perimeter
87024084
Area
473324449752441
Diagonal
30767659.961474
Surface area
2839946698514646
Volume
1.0297656668628E+22
Space diagonal
37682533.742535
Perimeter
65268063
Area
2.0495549885895E+14
Altitude
18841266.871268
Surface area
2.0495549885895E+14
Volume
1.2135904767862E+21
Height
10255886.653825