21331639 is an odd 8-digits composite number following 21331638
and preceding 21331640 . In scientific notation, it is written as 2.1331639 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 17984160 positive integers (up to 21331639) that are relatively prime to 21331639.
21331639 has 8 divisors, whose sum is 24779168
The reverse of 21331639 is 93613312
Previous prime number is 61
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-one million three hundred thirty-one thousand six hundred thirty-nine
Scientific notation
2.1331639 × 10^7
Engineering notation
2.1331639 × 10^6
Prime Factorization
7 × 61 × 49957
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21331639
Product of the distinct prime numbers
The prime factorization of 21331639 is 7 × 61 × 49957.
Since it has a total of 3 prime factors.
1 , 7 , 37 , 97 , 159 , 221 , 7040 , 1780 , 10839 , 59464 , 394053 , 180062 , 6492754 , 2932119 , 59084071 , 46787837 , 986752603 , 813772291 , 9955488177 , 4140636850
n×2
42663278
n×3
63994917
n×4
85326556
n×5
106658195
n÷2
10665819.5
n÷3
7110546.3333333
n÷3
5332909.75
n÷5
4266327.8
n2
455038822426321
n3
9.7067238909834E+21
n4
2.0706032991513E+29
n5
4.4169362089705E+36
2 √n
4618.6187329114
3 √n
277.33716713887
4 √n
67.960420340897
5 √n
29.228386735658
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
-21331638
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 21331639 can be divided by 8 positive divisors.
The sum of these divisors (counting 21331639) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001010111111010110111
3
Ternary
1111010202111201
4
Quaternary
1101113322313
5
Quinary
20430103024
6
Senary
2041113331
8
Octal
121277267
10
Decimal
21331639
12
Duodecimal
7188847
16
Hexadecimal
1457eb7
20
Vigesimal
6d691j
36
Base36
cp7lj
md5
dc48e49b76e0997656e222edbc0927c3
sha1
b086aa9acf830c8f30c76db5dca4a7ef1fe904a2
sha256
29c45137d5bd3cbc5f32c94795876449322ab469c4de58b0773e0acb5dc559b0
sha512
7bd7debfc05ba5ac8ffa2bc93686c1706006561a878452275ecd86e4b1e8cc5adb430eeec144c8ef0ad629434772a88398b52e8d0427a5e71c38d546ba1a5c39
ripemd-160
470b6656e7ae01c69eb9dbdbaa118cd6e1e68854
Diameter
42663278
Circumference
134030640.74286
Area
1.4295466216327E+15
Volume
4.0659429955117E+22
Surface area
5.7181864865307E+15
Circumference
134030640.74286
Perimeter
85326556
Area
455038822426321
Diagonal
30167493.181447
Surface area
2730232934557926
Volume
9.7067238909834E+21
Space diagonal
36947482.556718
Perimeter
63994917
Area
1.9703758996468E+14
Altitude
18473741.278359
Surface area
1.9703758996468E+14
Volume
1.14394838107E+21
Height
10055831.060482