21291009 is an odd 8-digits composite number following 21291008
and preceding 21291010 . In scientific notation, it is written as 2.1291009 × 10^7.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 14183136 positive integers (up to 21291009) that are relatively prime to 21291009.
21291009 has 8 divisors, whose sum is 28409760
The reverse of 21291009 is 90019212
Previous prime number is 2179
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million two hundred ninety-one thousand nine
Scientific notation
2.1291009 × 10^7
Engineering notation
2.1291009 × 10^6
Prime Factorization
3 × 2179 × 3257
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21291009
Product of the distinct prime numbers
The prime factorization of 21291009 is 3 × 2179 × 3257.
Since it has a total of 3 prime factors.
1 , 3 , 64 , 47 , 342 , 187 , 2572 , 6234 , 36108 , 8543 , 166193 , 100640 , 5471498 , 345819 , 86999490 , 96031036 , 302690678 , 348166656 , 6668087383 , 5231686494
n×2
42582018
n×3
63873027
n×4
85164036
n×5
106455045
n÷2
10645504.5
n÷3
7097003
n÷3
5322752.25
n÷5
4258201.8
n2
453307064238081
n3
9.6513647844566E+21
n4
2.0548729448815E+29
n5
4.3750318363328E+36
2 √n
4614.2181352858
3 √n
277.16097547663
4 √n
67.928036445092
5 √n
29.217244083654
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
-21291008
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 21291009 can be divided by 8 positive divisors.
The sum of these divisors (counting 21291009) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001001110000000000001
3
Ternary
1111001200202220
4
Quaternary
1101032000001
5
Quinary
20422303014
6
Senary
2040201253
8
Octal
121160001
10
Decimal
21291009
12
Duodecimal
7169229
16
Hexadecimal
144e001
20
Vigesimal
6d17a9
36
Base36
coc8x
md5
696e56687188fd59a023c702e2deb880
sha1
8ed3b25a81e1f8ff4b40177c30b16d250394c8ac
sha256
acf14bc4a53adbdf42c2d07a36e517ed6e7c4f326d10192983548f32509b7a63
sha512
143e34aedbf91c7c372bd15bc2bb7fa8ffc91d9adf617a50ab2bc34b6d856b128235d9f2c2c47c871a100859ea7483f2d9ec20141451f98d445a166c171f794c
ripemd-160
96f700d1f6289285d324b259e2b31a4a4af7ce6b
Diameter
42582018
Circumference
133775354.92383
Area
1.4241061428307E+15
Volume
4.0427542271952E+22
Surface area
5.6964245713228E+15
Circumference
133775354.92383
Perimeter
85164036
Area
453307064238081
Diagonal
30110033.684408
Surface area
2719842385428486
Volume
9.6513647844566E+21
Space diagonal
36877109.332406
Perimeter
63873027
Area
1.9628771667256E+14
Altitude
18438554.666203
Surface area
1.9628771667256E+14
Volume
1.137424247799E+21
Height
10036677.894803