21284685 is an odd 8-digits composite number following 21284684
and preceding 21284686 . In scientific notation, it is written as 2.1284685 × 10^7.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 11351808 positive integers (up to 21284685) that are relatively prime to 21284685.
21284685 has 8 divisors, whose sum is 28379640
The reverse of 21284685 is 58648212
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty-one million two hundred eighty-four thousand six hundred eighty-five
Scientific notation
2.1284685 × 10^7
Engineering notation
2.1284685 × 10^6
Prime Factorization
5 × 9 × 472993
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21284685
Product of the distinct prime numbers
The prime factorization of 21284685 is 5 × 9 × 472993.
Since it has a total of 3 prime factors.
6 , 3 , 40 , 97 , 694 , 971 , 4459 , 5820 , 30465 , 20400 , 696780 , 244575 , 5623322 , 5043820 , 22674751 , 36237528 , 770696087 , 107508054 , 456431306 , 8868027529
n×2
42569370
n×3
63854055
n×4
85138740
n×5
106423425
n÷2
10642342.5
n÷3
7094895
n÷3
5321171.25
n÷5
4256937
n2
453037815549225
n3
9.6427671970534E+21
n4
2.0524326231761E+29
n5
4.3685381868028E+36
2 √n
4613.5328111979
3 √n
277.13353134787
4 √n
67.922991771549
5 √n
29.215508216574
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
-21284684
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 21284685 can be divided by 8 positive divisors.
The sum of these divisors (counting 21284685) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001001100011101001101
3
Ternary
1111001101002200
4
Quaternary
1101030131031
5
Quinary
20422102220
6
Senary
2040112113
8
Octal
121143515
10
Decimal
21284685
12
Duodecimal
7165639
16
Hexadecimal
144c74d
20
Vigesimal
6d0be5
36
Base36
co7d9
md5
c83b26737adb872e0bebd4d37aa7e05f
sha1
520e2c9813773a1481c7a9993523e51af15ee039
sha256
44b1456b75e0d71a7254073573075196f10ef89cae38820ff391efd6337e9274
sha512
51c99d61cb9884a96668e22122c43018e8a3f3e0a63cb9583ad1e638e1c5e74e0173e29b01d4b46d6fc8f79074c50741ec4fd10bb04ea82ecb875a87633f8297
ripemd-160
ad2c18ad1d8f60aef9ee007926586a1e4168890b
Diameter
42569370
Circumference
133735620.05995
Area
1.4232602731278E+15
Volume
4.0391528782053E+22
Surface area
5.6930410925113E+15
Circumference
133735620.05995
Perimeter
85138740
Area
453037815549225
Diagonal
30101090.197839
Surface area
2718226893295350
Volume
9.6427671970534E+21
Space diagonal
36866155.843099
Perimeter
63854055
Area
1.9617112857032E+14
Altitude
18433077.92155
Surface area
1.9617112857032E+14
Volume
1.1364110124066E+21
Height
10033696.732613