12891 (number)

12891 is an odd 5-digits composite number following 12890 and preceding 12892. In scientific notation, it is written as 1.2891 × 10^4. The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors. There are 8592 positive integers (up to 12891) that are relatively prime to 12891.

Interesting facts

Basic properties

Name

Name twelve thousand eight hundred ninety-one

Notation

Scientific notation 1.2891 × 10^4
Engineering notation 1.2891 × 10^3

Prime Factorization of 12891

Prime Factorization 3 × 4297

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 12891
Product of the distinct prime numbers

The prime factorization of 12891 is 3 × 4297. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 6, 45, 7, 572, 862, 4160, 2385, 74195, 39673, 539254, 826477, 2286397, 1585684, 71457603, 81608936, 688667457, 403322389, 2858307243, 210912959

Basic calculations (n = 12891)

Multiplication

n×y
n×2 25782
n×3 38673
n×4 51564
n×5 64455

Division

n÷y
n÷2 6445.5
n÷3 4297
n÷3 3222.75
n÷5 2578.2

Exponentiation

ny
n2 166177881
n3 2142199063971
n4 27615088133650161
n5 3.5598610113088E+20

Nth Root

y√n
2√n 113.53853971229
3√n 23.447445556846
4√n 10.655446481133
5√n 6.6383068233556

Divisors of 12891

1, 3, 4297, 12891

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 -12890
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 12891 can be divided by 4 positive divisors. The sum of these divisors (counting 12891) is 1, the average is 0.25.

Base conversion 12891

Base System Value
2 Binary 11001001011011
3 Ternary 122200110
4 Quaternary 3021123
5 Quinary 403031
6 Senary 135403
8 Octal 31133
10 Decimal 12891
12 Duodecimal 7563
16 Hexadecimal 325b
20 Vigesimal 1c4b
36 Base36 9y3

Cryptographic Hash Functions

md5 324ceee24a671ea9383a804c12866b49
sha1 b97127a27cf71952998f39d04d5468d8765a0dfb
sha256 91a9fbeb1781ee35a16f4cc8005dac08411509f241a64d63f5222872708465b5
sha512 d2ccdba038888509976feeff0360ec27fbc9afb921ae5bf60945577cb2bd01ecdade689bac904a00a213b8a766f3858c1204c8bf1b7933bc41b5687e6d7c0d3b
ripemd-160 b4e48017831702c1469f7dba7800eaf03ab21122

12891 as geometric shapes

Circle

Radius = n
Diameter 25782
Circumference 80996.541794852
Area 522063210.13872

Sphere

Radius = n
Volume 8973222455864.3
Surface area 2088252840.5549
Circumference 80996.541794852

Square

Length = n
Perimeter 51564
Area 166177881
Diagonal 18230.627032552

Cube

Length = n
Surface area 997067286
Volume 2142199063971
Space diagonal 22327.86696037

Equilateral Triangle

Length = n
Perimeter 38673
Area 71957133.246534
Altitude 11163.933480185

Triangular Pyramid

Length = n
Surface area 71957133.246534
Volume 252460580797.56
Height 6076.8756775172