21000786 is an even 8-digits composite number following 21000785
and preceding 21000787 . In scientific notation, it is written as 2.1000786 × 10^7.
The sum of its digits is 24. It has a total of 4 prime factors and 16 positive divisors.
There are 6904224 positive integers (up to 21000786) that are relatively prime to 21000786.
21000786 has 16 divisors, whose sum is 42577824
The reverse of 21000786 is 68700012
Previous prime number is 73
Is Prime? no
Number parity even
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million seven hundred eighty-six
Scientific notation
2.1000786 × 10^7
Engineering notation
2.1000786 × 10^6
Prime Factorization
2 × 3 × 73 × 47947
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21000786
Product of the distinct prime numbers
The prime factorization of 21000786 is 2 × 3 × 73 × 47947.
Since it has a total of 4 prime factors.
7 , 3 , 16 , 64 , 535 , 651 , 6811 , 7680 , 23189 , 7802 , 163408 , 393155 , 3737421 , 7906617 , 29929216 , 72665033 , 361551181 , 307843097 , 7148883209 , 9818295243
n×2
42001572
n×3
63002358
n×4
84003144
n×5
105003930
n÷2
10500393
n÷3
7000262
n÷3
5250196.5
n÷5
4200157.2
n2
441033012617796
n3
9.2620399169216E+21
n4
1.9451011821873E+29
n5
4.0848653675462E+36
2 √n
4582.6614537843
3 √n
275.89585968152
4 √n
67.695357697439
5 √n
29.137152693264
1 , 2 , 3 , 6 , 73 , 146 , 219 , 438 , 47947 , 95894 , 143841 , 287682 , 3500131 , 7000262 , 10500393 , 21000786
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21000785
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21000786 can be divided by 16 positive divisors.
The sum of these divisors (counting 21000786) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010000000111001001010010
3
Ternary
1110111221122220
4
Quaternary
1100013021102
5
Quinary
20334011121
6
Senary
2030041510
8
Octal
120071122
10
Decimal
21000786
12
Duodecimal
7049296
16
Hexadecimal
1407252
20
Vigesimal
6b51j6
36
Base36
ci4b6
md5
9dd76977289ef7b67bfb3d5401e88f9d
sha1
cc6408855c2a190c991719983a832f71c85ee649
sha256
769146d3defb2035e87c8dfe61e638276843f35a71efdba7f3880a5ebd4e0591
sha512
5545b7424806e240d0a4d9257d30786f60125a7aa4f3d989cbc9805b3f73cb3935389ea3f816a7404e5c734d319bf22e2f243e7cfe2d86939ca9c0d8e80d5ef8
ripemd-160
2a4ea99660c658ee5900c2249c99d9cd19bae45e
Diameter
42001572
Circumference
131951830.03442
Area
1.3855460724306E+15
Volume
3.8796742080342E+22
Surface area
5.5421842897226E+15
Circumference
131951830.03442
Perimeter
84003144
Area
441033012617796
Diagonal
29699596.381695
Surface area
2646198075706776
Volume
9.2620399169216E+21
Space diagonal
36374428.350881
Perimeter
63002358
Area
1.909728964173E+14
Altitude
18187214.175441
Surface area
1.909728964173E+14
Volume
1.091541872146E+21
Height
9899865.460565