21031638 is an even 8-digits composite number following 21031637
and preceding 21031639 . In scientific notation, it is written as 2.1031638 × 10^7.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 7010544 positive integers (up to 21031638) that are relatively prime to 21031638.
21031638 has 8 divisors, whose sum is 42063288
The reverse of 21031638 is 83613012
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million thirty-one thousand six hundred thirty-eight
Scientific notation
2.1031638 × 10^7
Engineering notation
2.1031638 × 10^6
Prime Factorization
2 × 3 × 3505273
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21031638
Product of the distinct prime numbers
The prime factorization of 21031638 is 2 × 3 × 3505273.
Since it has a total of 3 prime factors.
5 , 8 , 23 , 28 , 844 , 406 , 2444 , 383 , 30315 , 52297 , 867011 , 429890 , 6841996 , 1162547 , 18968969 , 94914371 , 200964363 , 556183430 , 1784842991 , 129035687
n×2
42063276
n×3
63094914
n×4
84126552
n×5
105158190
n÷2
10515819
n÷3
7010546
n÷3
5257909.5
n÷5
4206327.6
n2
442329796963044
n3
9.3029201663402E+21
n4
1.9565564928137E+29
n5
4.1149587883407E+36
2 √n
4586.026384573
3 √n
276.03089866212
4 √n
67.720206619391
5 √n
29.14570867447
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
-21031637
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 21031638 can be divided by 8 positive divisors.
The sum of these divisors (counting 21031638) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000001110101011010110
3
Ternary
1110120111222120
4
Quaternary
1100032223112
5
Quinary
20341003023
6
Senary
2030440410
8
Octal
120165326
10
Decimal
21031638
12
Duodecimal
7063106
16
Hexadecimal
140ead6
20
Vigesimal
6b8j1i
36
Base36
cis46
md5
a3aac1a57c2201ae2ac1417c8131f008
sha1
08f29a12728c2b8e4d08229b9cce36eafd77ae8f
sha256
a46a5e1c680cf434001a31b639f9c4f721e366d3c2db8a268012227a71b2d6cb
sha512
fe383e64782178d4895456759d7873ea5c4db9d3bbeaf5191e8f8d72b24a4e4f15cc0ea07fe532626867516251a24834a16bd415480c2940bf45fde2c360ebb1
ripemd-160
a116f5b0ca25a025c8f7a9443afada3eeb29ab36
Diameter
42063276
Circumference
132145678.86752
Area
1.389620040603E+15
Volume
3.8967980868676E+22
Surface area
5.5584801624119E+15
Circumference
132145678.86752
Perimeter
84126552
Area
442329796963044
Diagonal
29743227.698521
Surface area
2653978781778264
Volume
9.3029201663402E+21
Space diagonal
36427865.582396
Perimeter
63094914
Area
1.915344205104E+14
Altitude
18213932.791198
Surface area
1.915344205104E+14
Volume
1.0963596557427E+21
Height
9914409.2328405