21002807 is an odd 8-digits composite number following 21002806
and preceding 21002808 . In scientific notation, it is written as 2.1002807 × 10^7.
The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors.
There are 17969112 positive integers (up to 21002807) that are relatively prime to 21002807.
21002807 has 8 divisors, whose sum is 24047616
The reverse of 21002807 is 70820012
Previous prime number is 607
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2
Name
twenty-one million two thousand eight hundred seven
Scientific notation
2.1002807 × 10^7
Engineering notation
2.1002807 × 10^6
Prime Factorization
7 × 607 × 4943
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21002807
Product of the distinct prime numbers
The prime factorization of 21002807 is 7 × 607 × 4943.
Since it has a total of 3 prime factors.
5 , 7 , 28 , 46 , 520 , 975 , 383 , 713 , 52375 , 54823 , 725413 , 122542 , 150503 , 2718744 , 86305248 , 5941949 , 103244462 , 796824235 , 4654468851 , 2500276219
n×2
42005614
n×3
63008421
n×4
84011228
n×5
105014035
n÷2
10501403.5
n÷3
7000935.6666667
n÷3
5250701.75
n÷5
4200561.4
n2
441117901879249
n3
9.2647141574148E+21
n4
1.9458500335835E+29
n5
4.0868312706298E+36
2 √n
4582.881953531
3 √n
275.90470963039
4 √n
67.69698629578
5 √n
29.137713471503
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
-21002806
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 21002807 can be divided by 8 positive divisors.
The sum of these divisors (counting 21002807) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000000111101000110111
3
Ternary
1110112001102202
4
Quaternary
1100013220313
5
Quinary
20334042212
6
Senary
2030055115
8
Octal
120075067
10
Decimal
21002807
12
Duodecimal
704a49b
16
Hexadecimal
1407a37
20
Vigesimal
6b5707
36
Base36
ci5vb
md5
e912a509d533501b7a84673408a18596
sha1
f29d77ab15c37551582258ef7c749f86c8ddadfd
sha256
b77708ddc5b7aa3a018b5fd7e6c34ab93795bfed23a5101e1a94b94047a6e714
sha512
c57f045facda02d1e11679a6d7e5403ec09d3b7ed7ceef0538b01a2d6a4218002a21a4b5eda2863d3f5236c0bffc3e8d952484195b98d91a24c02768ae6a2066
ripemd-160
ae764988501ee899dae8afbf92f156aee5c98955
Diameter
42005614
Circumference
131964528.35193
Area
1.3858127599108E+15
Volume
3.8807943912725E+22
Surface area
5.5432510396432E+15
Circumference
131964528.35193
Perimeter
84011228
Area
441117901879249
Diagonal
29702454.507305
Surface area
2646707411275494
Volume
9.2647141574148E+21
Space diagonal
36377928.825563
Perimeter
63008421
Area
1.9100965454576E+14
Altitude
18188964.412782
Surface area
1.9100965454576E+14
Volume
1.0918570344105E+21
Height
9900818.1691015