21007789 is an odd 8-digits composite number following 21007788
and preceding 21007790 . In scientific notation, it is written as 2.1007789 × 10^7.
The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors.
There are 19097980 positive integers (up to 21007789) that are relatively prime to 21007789.
21007789 has 4 divisors, whose sum is 22917600
The reverse of 21007789 is 98770012
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million seven thousand seven hundred eighty-nine
Scientific notation
2.1007789 × 10^7
Engineering notation
2.1007789 × 10^6
Prime Factorization
11 × 1909799
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21007789
Product of the distinct prime numbers
The prime factorization of 21007789 is 11 × 1909799.
Since it has a total of 2 prime factors.
1 , 8 , 36 , 72 , 528 , 520 , 2749 , 8508 , 79217 , 81676 , 606188 , 233038 , 6502771 , 1276068 , 26329685 , 80527392 , 448585265 , 986924550 , 560847240 , 3569739347
n×2
42015578
n×3
63023367
n×4
84031156
n×5
105038945
n÷2
10503894.5
n÷3
7002596.3333333
n÷3
5251947.25
n÷5
4201557.8
n2
441327198668521
n3
9.2713086695894E+21
n4
1.947696962846E+29
n5
4.091680683141E+36
2 √n
4583.4254657407
3 √n
275.92652335896
4 √n
67.701000478137
5 √n
29.13909567072
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
-21007788
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 21007789 can be divided by 4 positive divisors.
The sum of these divisors (counting 21007789) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000001000110110101101
3
Ternary
1110112022021021
4
Quaternary
1100020312231
5
Quinary
20334222124
6
Senary
2030134141
8
Octal
120106655
10
Decimal
21007789
12
Duodecimal
7051351
16
Hexadecimal
1408dad
20
Vigesimal
6b5j99
36
Base36
ci9pp
md5
33b92ef58f1fd05902d967b3acd98f54
sha1
928b6f7fb72243d01bede4ba694c7aeb67418c34
sha256
f4a320870e2ae23b7112f4b9f522f851229ae45c5776c5801c811776c23ee0b5
sha512
49ed8bcf35d9dfeba3434e05aac7394c7193fa796519a73b7985d0a6c3ef7f7f7e12d698c0a2bb432fdf2c791de984ddd1a0447d9328e28d9d087a0c72dbbc07
ripemd-160
65596c131eef4ef15c2b9baca128559ed38028b0
Diameter
42015578
Circumference
131995831.18113
Area
1.3864702851664E+15
Volume
3.8835566940727E+22
Surface area
5.5458811406656E+15
Circumference
131995831.18113
Perimeter
84031156
Area
441327198668521
Diagonal
29709500.119272
Surface area
2647963192011126
Volume
9.2713086695894E+21
Space diagonal
36386557.902687
Perimeter
63023367
Area
1.9110028271398E+14
Altitude
18193278.951343
Surface area
1.9110028271398E+14
Volume
1.0926342051234E+21
Height
9903166.7064241