21587621 is an odd 8-digits composite number following 21587620
and preceding 21587622 . In scientific notation, it is written as 2.1587621 × 10^7.
The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors.
There are 19110000 positive integers (up to 21587621) that are relatively prime to 21587621.
21587621 has 16 divisors, whose sum is 24178176
The reverse of 21587621 is 12678512
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-one million five hundred eighty-seven thousand six hundred twenty-one
Scientific notation
2.1587621 × 10^7
Engineering notation
2.1587621 × 10^6
Prime Factorization
131 × 71 × 11 × 211
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21587621
Product of the distinct prime numbers
The prime factorization of 21587621 is 131 × 71 × 11 × 211.
Since it has a total of 4 prime factors.
1 , 2 , 13 , 91 , 491 , 825 , 3274 , 6271 , 74718 , 16519 , 17490 , 349217 , 2999577 , 1536834 , 31244208 , 62753269 , 548066059 , 408460317 , 134115195 , 8157516310
n×2
43175242
n×3
64762863
n×4
86350484
n×5
107938105
n÷2
10793810.5
n÷3
7195873.6666667
n÷3
5396905.25
n÷5
4317524.2
n2
466025380439641
n3
1.0060379289312E+22
n4
2.1717965521391E+29
n5
4.6883920856686E+36
2 √n
4646.2480562277
3 √n
278.44211778701
4 √n
68.163392346829
5 √n
29.298201189934
1 , 11 , 71 , 131 , 211 , 781 , 1441 , 2321 , 9301 , 14981 , 27641 , 102311 , 164791 , 304051 , 1962511 , 21587621
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21587620
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21587621 can be divided by 16 positive divisors.
The sum of these divisors (counting 21587621) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010010010110011010100101
3
Ternary
1111121202122112
4
Quaternary
1102112122211
5
Quinary
21011300441
6
Senary
2050410405
8
Octal
122263245
10
Decimal
21587621
12
Duodecimal
7290a05
16
Hexadecimal
14966a5
20
Vigesimal
6ei911
36
Base36
cup45
md5
534fca4086c3bca093b794ac583934a6
sha1
218d6003c69a177fbba447b3473a8e19221b403d
sha256
70bf19f120f320d41095c691501240c4c75c3cffd72595a7278ff74f661af427
sha512
8e5bb837fb6584f2ffd2ccd66d2d15672ae8b88e2d04bb1661daaf394499f37f9f006b9ea7fee05d03f9f382c111b4b195aec0d5609b7e366c6082959b6a2c09
ripemd-160
903fedbdc7f0b66fd9d2ddd19557ee09aa596e47
Diameter
43175242
Circumference
135639023.08416
Area
1.4640619115756E+15
Volume
4.2140818223505E+22
Surface area
5.8562476463023E+15
Circumference
135639023.08416
Perimeter
86350484
Area
466025380439641
Diagonal
30529506.39757
Surface area
2796152282637846
Volume
1.0060379289312E+22
Space diagonal
37390856.386541
Perimeter
64762863
Area
2.0179490913452E+14
Altitude
18695428.19327
Surface area
2.0179490913452E+14
Volume
1.1856270694635E+21
Height
10176502.132523