12861 (number)

12861 is an odd 5-digits composite number following 12860 and preceding 12862. In scientific notation, it is written as 1.2861 × 10^4. The sum of its digits is 18. It has a total of 2 prime factors and 4 positive divisors. There are 8568 positive integers (up to 12861) that are relatively prime to 12861.

Interesting facts

Basic properties

Name

Name twelve thousand eight hundred sixty-one

Notation

Scientific notation 1.2861 × 10^4
Engineering notation 1.2861 × 10^3

Prime Factorization of 12861

Prime Factorization 9 × 1429

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 12861
Product of the distinct prime numbers

The prime factorization of 12861 is 9 × 1429. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 5, 85, 81, 778, 528, 9591, 5726, 62377, 98272, 555482, 197079, 3639446, 8916451, 54299461, 76828574, 182803088, 93446964, 1708990348, 4268873067

Basic calculations (n = 12861)

Multiplication

n×y
n×2 25722
n×3 38583
n×4 51444
n×5 64305

Division

n÷y
n÷2 6430.5
n÷3 4287
n÷3 3215.25
n÷5 2572.2

Exponentiation

ny
n2 165405321
n3 2127277833381
n4 27358920215113041
n5 3.5186307288657E+20

Nth Root

y√n
2√n 113.40634902861
3√n 23.429242424339
4√n 10.649241711437
5√n 6.6352142029477

Divisors of 12861

1, 9, 1429, 12861

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 -12860
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 12861 can be divided by 4 positive divisors. The sum of these divisors (counting 12861) is 1, the average is 0.25.

Base conversion 12861

Base System Value
2 Binary 11001000111101
3 Ternary 122122100
4 Quaternary 3020331
5 Quinary 402421
6 Senary 135313
8 Octal 31075
10 Decimal 12861
12 Duodecimal 7539
16 Hexadecimal 323d
20 Vigesimal 1c31
36 Base36 9x9

Cryptographic Hash Functions

md5 75a84b531abe6e9fe5de743f134186ab
sha1 68d22f0ee5345f9355a5f48657a2e2482ae20b29
sha256 50f666cf4a0029f4d1eb4ef33847d633b1e1577b8bfb45090cdf826b81859924
sha512 3e16ea1852cad24b4f664befc3663651c0a7f736607de7fb3c8a208fbcd68953ad61abc47fce8f1af3d76a3e4fdf1d3d667325f932eb38b62339180313d54671
ripemd-160 952243b35ec56c403609ec8dd5fdfeacc9c3af96

12861 as geometric shapes

Circle

Radius = n
Diameter 25722
Circumference 80808.046235637
Area 519636141.31826

Sphere

Radius = n
Volume 8910720551325.5
Surface area 2078544565.273
Circumference 80808.046235637

Square

Length = n
Perimeter 51444
Area 165405321
Diagonal 18188.20062568

Cube

Length = n
Surface area 992431926
Volume 2127277833381
Space diagonal 22275.905436143

Equilateral Triangle

Length = n
Perimeter 38583
Area 71622604.95356
Altitude 11137.952718072

Triangular Pyramid

Length = n
Surface area 71622604.95356
Volume 250702096908.59
Height 6062.7335418935