21003871 is an odd 8-digits composite number following 21003870
and preceding 21003872 . In scientific notation, it is written as 2.1003871 × 10^7.
The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors.
There are 18003312 positive integers (up to 21003871) that are relatively prime to 21003871.
21003871 has 4 divisors, whose sum is 24004432
The reverse of 21003871 is 17830012
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty-one million three thousand eight hundred seventy-one
Scientific notation
2.1003871 × 10^7
Engineering notation
2.1003871 × 10^6
Prime Factorization
7 × 3000553
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21003871
Product of the distinct prime numbers
The prime factorization of 21003871 is 7 × 3000553.
Since it has a total of 2 prime factors.
6 , 6 , 20 , 9 , 326 , 68 , 4207 , 5261 , 74135 , 98985 , 364638 , 367682 , 4664132 , 4259173 , 51532663 , 95397031 , 393983070 , 142656533 , 3928209340 , 7253321741
n×2
42007742
n×3
63011613
n×4
84015484
n×5
105019355
n÷2
10501935.5
n÷3
7001290.3333333
n÷3
5250967.75
n÷5
4200774.2
n2
441162596984641
n3
9.2661222770904E+21
n4
1.9462443697823E+29
n5
4.0878665677384E+36
2 √n
4582.9980362204
3 √n
275.90936865294
4 √n
67.697843660049
5 √n
29.138008688223
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21003870
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21003871 can be divided by 4 positive divisors.
The sum of these divisors (counting 21003871) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000000111111001011111
3
Ternary
1110112002220011
4
Quaternary
1100013321133
5
Quinary
20334110441
6
Senary
2030104051
8
Octal
120077137
10
Decimal
21003871
12
Duodecimal
704b027
16
Hexadecimal
1407e5f
20
Vigesimal
6b59db
36
Base36
ci6ov
md5
56b0ad9c3208b11d4134587ae7c64376
sha1
ced3ff9db9990a393249d70373956ba4e42bff86
sha256
8a34bcd2ad2e725b98d26cbf17b1114b5f3719d2f27c66da9913149a77624fbc
sha512
c2ba36e2f61605083399029d2a512d879267798a7b3551fb262d997fa1075fb7471e419f6ef032134947c3c539b1eb27017768d09e75e4499e0e4c3010d3208c
ripemd-160
583c03633276d4c357fe45bf60f7e92775fc6590
Diameter
42007742
Circumference
131971213.6611
Area
1.3859531737255E+15
Volume
3.8813842230629E+22
Surface area
5.5438126949022E+15
Circumference
131971213.6611
Perimeter
84015484
Area
441162596984641
Diagonal
29703959.230535
Surface area
2646975581907846
Volume
9.2661222770904E+21
Space diagonal
36379771.727623
Perimeter
63011613
Area
1.9102900809411E+14
Altitude
18189885.863811
Surface area
1.9102900809411E+14
Volume
1.0920229829057E+21
Height
9901319.7435116