12805 (number)

12805 is an odd 5-digits composite number following 12804 and preceding 12806. In scientific notation, it is written as 1.2805 × 10^4. The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors. There are 9408 positive integers (up to 12805) that are relatively prime to 12805.

Interesting facts

Basic properties

Name

Name twelve thousand eight hundred five

Notation

Scientific notation 1.2805 × 10^4
Engineering notation 1.2805 × 10^3

Prime Factorization of 12805

Prime Factorization 65 × 197

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 12805
Product of the distinct prime numbers

The prime factorization of 12805 is 65 × 197. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 7, 44, 21, 275, 745, 7731, 1564, 45706, 90690, 688099, 846551, 5059289, 9867859, 47255979, 56190194, 361166320, 163817975, 7681253755, 3649578086

Basic calculations (n = 12805)

Multiplication

n×y
n×2 25610
n×3 38415
n×4 51220
n×5 64025

Division

n÷y
n÷2 6402.5
n÷3 4268.3333333333
n÷3 3201.25
n÷5 2561

Exponentiation

ny
n2 163968025
n3 2099610560125
n4 26885513222400625
n5 3.4426899681284E+20

Nth Root

y√n
2√n 113.15917991926
3√n 23.395187361004
4√n 10.637630371434
5√n 6.6294258372199

Divisors of 12805

1, 65, 197, 12805

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 -12804
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 12805 can be divided by 4 positive divisors. The sum of these divisors (counting 12805) is 1, the average is 0.25.

Base conversion 12805

Base System Value
2 Binary 11001000000101
3 Ternary 122120021
4 Quaternary 3020011
5 Quinary 402210
6 Senary 135141
8 Octal 31005
10 Decimal 12805
12 Duodecimal 74b1
16 Hexadecimal 3205
20 Vigesimal 1c05
36 Base36 9vp

Cryptographic Hash Functions

md5 b82b80956cfbe75101bd223fe6319dec
sha1 637255dcffebe96a7e506fbc4f637e468cb1bf34
sha256 ae7bf145e2412c78982cf08af5e81d2cefcc3f1cab11c93661193ad1cf4db196
sha512 05427d4303b40ac62990070e2db073ef13222aa93080428fc301629d166d03948aca75cc243ba5b29da5641827ca7397ee297c645529878490d533b7b59f381b
ripemd-160 153441606ab83123884a17c52e8d3624c24b3980

12805 as geometric shapes

Circle

Radius = n
Diameter 25610
Circumference 80456.187858435
Area 515120742.76363

Sphere

Radius = n
Volume 8794828148117.7
Surface area 2060482971.0545
Circumference 80456.187858435

Square

Length = n
Perimeter 51220
Area 163968025
Diagonal 18109.004666187

Cube

Length = n
Surface area 983808150
Volume 2099610560125
Space diagonal 22178.910590919

Equilateral Triangle

Length = n
Perimeter 38415
Area 71000237.529181
Altitude 11089.45529546

Triangular Pyramid

Length = n
Surface area 71000237.529181
Volume 247441477485.88
Height 6036.3348887292