20685845 (number)

20685845 is an odd 8-digits composite number following 20685844 and preceding 20685846. In scientific notation, it is written as 2.0685845 × 10^7. The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors. There are 15892800 positive integers (up to 20685845) that are relatively prime to 20685845.

Interesting facts

Basic properties

Name

Name twenty million six hundred eighty-five thousand eight hundred forty-five

Notation

Scientific notation 2.0685845 × 10^7
Engineering notation 2.0685845 × 10^6

Prime Factorization of 20685845

Prime Factorization 5 × 29 × 431 × 331

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20685845
Product of the distinct prime numbers

The prime factorization of 20685845 is 5 × 29 × 431 × 331. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 4, 100, 56, 230, 186, 4571, 2699, 46727, 87426, 834766, 727236, 6447120, 5305115, 13418, 14904319, 423522101, 816312987, 3879567855, 6507383648

Basic calculations (n = 20685845)

Multiplication

n×y
n×2 41371690
n×3 62057535
n×4 82743380
n×5 103429225

Division

n÷y
n÷2 10342922.5
n÷3 6895281.6666667
n÷3 5171461.25
n÷5 4137169

Exponentiation

ny
n2 427904183364025
n3 8.8515596119198E+21
n4 1.8310199014043E+29
n5 3.7876193872365E+36

Nth Root

y√n
2√n 4548.1694119722
3√n 274.50973806504
4√n 67.440117229823
5√n 29.049231878258

Divisors of 20685845

1, 5, 29, 145, 331, 431, 1655, 2155, 9599, 12499, 47995, 62495, 142661, 713305, 4137169, 20685845

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 -20685844
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 20685845 can be divided by 16 positive divisors. The sum of these divisors (counting 20685845) is 1, the average is 0.0625.

Base conversion 20685845

Base System Value
2 Binary 1001110111010010000010101
3 Ternary 1102220221122102
4 Quaternary 1032322100111
5 Quinary 20243421340
6 Senary 2015211445
8 Octal 116722025
10 Decimal 20685845
12 Duodecimal 6b16b85
16 Hexadecimal 13ba415
20 Vigesimal 695ec5
36 Base36 cbdat

Cryptographic Hash Functions

md5 990946aa31a75bcd75aed08abf44c8ab
sha1 3ab722ae88d37e94c157dbfe64ceb550abf56964
sha256 a17197b97584048976b2f9e83832775940d23e9e7827a53f509fec8126001933
sha512 6b78dc8eba85ae658228f502e7533ec538d73249fbb1f6fa856481b8453ea059a5200f7a3ddc3f33de50bfc5f6d5ff552c27858920a34edf443d3ac111013044
ripemd-160 21b3e33d421feb6af28f6ade133e23fa3da2e418

20685845 as geometric shapes

Circle

Radius = n
Diameter 41371690
Circumference 129972997.37059
Area 1.3443006388968E+15

Sphere

Radius = n
Volume 3.7077326199492E+22
Surface area 5.377202555587E+15
Circumference 129972997.37059

Square

Length = n
Perimeter 82743380
Area 427904183364025
Diagonal 29254202.548148

Cube

Length = n
Surface area 2567425100184150
Volume 8.8515596119198E+21
Space diagonal 35828934.537495

Equilateral Triangle

Length = n
Perimeter 62057535
Area 1.8528794658944E+14
Altitude 17914467.268747

Triangular Pyramid

Length = n
Surface area 1.8528794658944E+14
Volume 1.0431663042776E+21
Height 9751400.8493826