21206871 is an odd 8-digits composite number following 21206870
and preceding 21206872 . In scientific notation, it is written as 2.1206871 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 11404800 positive integers (up to 21206871) that are relatively prime to 21206871.
21206871 has 8 divisors, whose sum is 22811904
The reverse of 21206871 is 17860212
Previous prime number is 63
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty-one million two hundred six thousand eight hundred seventy-one
Scientific notation
2.1206871 × 10^7
Engineering notation
2.1206871 × 10^6
Prime Factorization
17 × 63 × 19801
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21206871
Product of the distinct prime numbers
The prime factorization of 21206871 is 17 × 63 × 19801.
Since it has a total of 3 prime factors.
10 , 7 , 69 , 3 , 283 , 283 , 8112 , 7264 , 59011 , 79015 , 971011 , 368935 , 7455667 , 941959 , 91609208 , 89999341 , 245874915 , 999976445 , 3740916780 , 1828991034
n×2
42413742
n×3
63620613
n×4
84827484
n×5
106034355
n÷2
10603435.5
n÷3
7068957
n÷3
5301717.75
n÷5
4241374.2
n2
449731377610641
n3
9.5373953096412E+21
n4
2.0225831200756E+29
n5
4.2892659314222E+36
2 √n
4605.0918557614
3 √n
276.79539774694
4 √n
67.860827107849
5 √n
29.194115301134
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
-21206870
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 21206871 can be divided by 8 positive divisors.
The sum of these divisors (counting 21206871) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000111001011101010111
3
Ternary
1110220102100200
4
Quaternary
1100321131113
5
Quinary
20412104441
6
Senary
2034311543
8
Octal
120713527
10
Decimal
21206871
12
Duodecimal
71285b3
16
Hexadecimal
1439757
20
Vigesimal
6cah3b
36
Base36
cmjbr
md5
d710b7de1e9d012e3536e14f24010dfd
sha1
eeb8147d4153527b084fc65e4ed3239c161ed2dc
sha256
75f455533173439fbff646958c9f0b48aae8dd3e8d1ad90951e6540aca6e3316
sha512
48612d5c2b7f7e27a62390f2ad659d7f76886a4cdd6cf29a106bbc96d49718ebba4ddd1dc2b37b8ed2f7b916fdac0caa12e9f52624063bbcd2da2ecce05d5f9e
ripemd-160
bbfa82fa7a98242482efcbb701ba7ecd9c09ec8e
Diameter
42413742
Circumference
133246700.27845
Area
1.4128727919904E+15
Volume
3.9950148052201E+22
Surface area
5.6514911679616E+15
Circumference
133246700.27845
Perimeter
84827484
Area
449731377610641
Diagonal
29991044.583697
Surface area
2698388265663846
Volume
9.5373953096412E+21
Space diagonal
36731378.041559
Perimeter
63620613
Area
1.9473939894489E+14
Altitude
18365689.02078
Surface area
1.9473939894489E+14
Volume
1.123992816384E+21
Height
9997014.8612322