20126721 is an odd 8-digits composite number following 20126720
and preceding 20126722 . In scientific notation, it is written as 2.0126721 × 10^7.
The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors.
There are 13417812 positive integers (up to 20126721) that are relatively prime to 20126721.
20126721 has 4 divisors, whose sum is 26835632
The reverse of 20126721 is 12762102
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty million one hundred twenty-six thousand seven hundred twenty-one
Scientific notation
2.0126721 × 10^7
Engineering notation
2.0126721 × 10^6
Prime Factorization
3 × 6708907
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20126721
Product of the distinct prime numbers
The prime factorization of 20126721 is 3 × 6708907.
Since it has a total of 2 prime factors.
1 , 4 , 82 , 77 , 690 , 133 , 9345 , 9512 , 47 , 12263 , 290038 , 750618 , 1756581 , 3393203 , 12971523 , 60902466 , 379350501 , 481921448 , 6338240793 , 9816333572
n×2
40253442
n×3
60380163
n×4
80506884
n×5
100633605
n÷2
10063360.5
n÷3
6708907
n÷3
5031680.25
n÷5
4025344.2
n2
405084898211841
n3
8.1530307276231E+21
n4
1.640937747593E+29
n5
3.3026696224172E+36
2 √n
4486.2814222917
3 √n
272.01384463123
4 √n
66.979709034093
5 √n
28.890469875114
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
-20126720
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 20126721 can be divided by 4 positive divisors.
The sum of these divisors (counting 20126721) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110001110000000001
3
Ternary
1101212112200010
4
Quaternary
1030301300001
5
Quinary
20123023341
6
Senary
1555215133
8
Octal
114616001
10
Decimal
20126721
12
Duodecimal
68a74a9
16
Hexadecimal
1331c01
20
Vigesimal
65fgg1
36
Base36
bzdvl
md5
7d48e9d67a4f8731f77d89208247b7da
sha1
a93d98122a295c924bec8f290455ae7ecf8c5427
sha256
b573daa35bd2577b2f898ef484c93f15177fbdeb67888938e730969287c719d7
sha512
9df3eb6b4e683a1387634f33c39b4f47b7b090777807d5b4a386e05894a86d12ab19c34c04e0efec7d641f1538362ae949e0b0687fed63675eecb145e4254407
ripemd-160
b09a356647a0f6625f437659d0e2f68365bc5d7d
Diameter
40253442
Circumference
126459917.6689
Area
1.2726117403025E+15
Volume
3.415133525119E+22
Surface area
5.09044696121E+15
Circumference
126459917.6689
Perimeter
80506884
Area
405084898211841
Diagonal
28463481.804299
Surface area
2430509389271046
Volume
8.1530307276231E+21
Space diagonal
34860503.361763
Perimeter
60380163
Area
1.7540690627044E+14
Altitude
17430251.680882
Surface area
1.7540690627044E+14
Volume
9.6084388578743E+20
Height
9487827.2680998