21696721 is an odd 8-digits prime number following 21696720
and preceding 21696722 . In scientific notation, it is written as 2.1696721 × 10^7.
The sum of its digits is 34. It has a total of 1 prime factors and 2 positive divisors.
There are 21696720 positive integers (up to 21696721) that are relatively prime to 21696721.
21696721 has 2 divisors, whose sum is 21696722
The reverse of 21696721 is 12769612
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million six hundred ninety-six thousand seven hundred twenty-one
Scientific notation
2.1696721 × 10^7
Engineering notation
2.1696721 × 10^6
Prime Factorization
21696721
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
21696721
Product of the distinct prime numbers
The prime factorization of 21696721 is 21696721.
Since it has a total of 1 prime factors.
1 , 3 , 45 , 65 , 45 , 112 , 661 , 3322 , 31633 , 54277 , 303395 , 305734 , 8979424 , 6876325 , 85705791 , 26073851 , 157233727 , 577944787 , 5849649291 , 5461323044
n×2
43393442
n×3
65090163
n×4
86786884
n×5
108483605
n÷2
10848360.5
n÷3
7232240.3333333
n÷3
5424180.25
n÷5
4339344.2
n2
470747702151841
n3
1.021368155498E+22
n4
2.2160339908124E+29
n5
4.8080671225173E+36
2 √n
4657.9739157707
3 √n
278.91039546627
4 √n
68.249351028202
5 √n
29.327755086505
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
21696722
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10848361
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4657.9740231135
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999078202
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21696721 can be divided by 2 positive divisors.
The sum of these divisors (counting 21696721) is 21696722, the average is 10848361.
Base
System
Value
2
Binary
1010010110001000011010001
3
Ternary
1111211022022021
4
Quaternary
1102301003101
5
Quinary
21023243341
6
Senary
2053011441
8
Octal
122610321
10
Decimal
21696721
12
Duodecimal
7323b81
16
Hexadecimal
14b10d1
20
Vigesimal
6fc1g1
36
Base36
cx1ap
md5
deeb78770ecb680186958c2fd17172cb
sha1
14523f58d48b5e03ec4c3b73b9ee8c8d41e81521
sha256
5fde2b97575fff53dac3e09902cbd7a50b5687611871b1c0aa6da461068de976
sha512
4f4f448b87a43891b53d77853b8827efc16ef6063c276131d950dfb26689146eb2384400d56d5fcf3b5a631418cf5f83eeb275745e0a3444c3b54f7eff3167c2
ripemd-160
84d00b8352a17060af59c074f7907f56dd5945fc
Diameter
43393442
Circumference
136324518.60117
Area
1.4788975227745E+15
Volume
4.2782969252306E+22
Surface area
5.915590091098E+15
Circumference
136324518.60117
Perimeter
86786884
Area
470747702151841
Diagonal
30683797.097225
Surface area
2824486212911046
Volume
1.021368155498E+22
Space diagonal
37579823.129647
Perimeter
65090163
Area
2.0383973441832E+14
Altitude
18789911.564823
Surface area
2.0383973441832E+14
Volume
1.2036939147343E+21
Height
10227932.365742