21708531 is an odd 8-digits composite number following 21708530
and preceding 21708532 . In scientific notation, it is written as 2.1708531 × 10^7.
The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors.
There are 13359024 positive integers (up to 21708531) that are relatively prime to 21708531.
21708531 has 12 divisors, whose sum is 33769008
The reverse of 21708531 is 13580712
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million seven hundred eight thousand five hundred thirty-one
Scientific notation
2.1708531 × 10^7
Engineering notation
2.1708531 × 10^6
Prime Factorization
3 × 3 × 13 × 185543
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
7236177
Product of the distinct prime numbers
The prime factorization of 21708531 is 3 × 3 × 13 × 185543.
Since it has a total of 4 prime factors.
1 , 8 , 29 , 67 , 520 , 787 , 7790 , 608 , 68451 , 93037 , 524778 , 464944 , 7363499 , 9294762 , 13581777 , 32404924 , 176576303 , 232360213 , 2283711103 , 3641804705
n×2
43417062
n×3
65125593
n×4
86834124
n×5
108542655
n÷2
10854265.5
n÷3
7236177
n÷3
5427132.75
n÷5
4341706.2
n2
471260318177961
n3
1.0230369226236E+22
n4
2.2208628748919E+29
n5
4.8211670566341E+36
2 √n
4659.2414618691
3 √n
278.96099196421
4 √n
68.258636536845
5 √n
29.330947139345
1 , 3 , 9 , 13 , 39 , 117 , 185543 , 556629 , 1669887 , 2412059 , 7236177 , 21708531
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21708530
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21708531 can be divided by 12 positive divisors.
The sum of these divisors (counting 21708531) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010010110011111011110011
3
Ternary
1111211220111200
4
Quaternary
1102303323303
5
Quinary
21024133111
6
Senary
2053142243
8
Octal
122637363
10
Decimal
21708531
12
Duodecimal
732a983
16
Hexadecimal
14b3ef3
20
Vigesimal
6fdb6b
36
Base36
cxaer
md5
ea1c7972f4bff4f32d961e62ca27c483
sha1
c8f547f66051135783227bf2dad2683ea6047229
sha256
bdd192969637df505978c2945adff88609e6340fa5971ca82a2002424a704afb
sha512
370a398f102d7701195d36828ec074f777e25a3ecc48c70b2cadfd6b2a632af5a2c953ed713cae854c930f578a5e8561fa9c9d29284ff2772a985a8879570963
ripemd-160
0ab120cd01f7a2e790a67bc425815f05174e815d
Diameter
43417062
Circumference
136398723.01965
Area
1.4805079535163E+15
Volume
4.2852870406206E+22
Surface area
5.9220318140651E+15
Circumference
136398723.01965
Perimeter
86834124
Area
471260318177961
Diagonal
30700498.959397
Surface area
2827561909067766
Volume
1.0230369226236E+22
Space diagonal
37600278.649684
Perimeter
65125593
Area
2.0406170366883E+14
Altitude
18800139.324842
Surface area
2.0406170366883E+14
Volume
1.2056605756523E+21
Height
10233499.653132