11891 (number)

11891 is an odd 5-digits composite number following 11890 and preceding 11892. In scientific notation, it is written as 1.1891 × 10^4. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 10120 positive integers (up to 11891) that are relatively prime to 11891.

Interesting facts

Basic properties

Name

Name eleven thousand eight hundred ninety-one

Notation

Scientific notation 1.1891 × 10^4
Engineering notation 1.1891 × 10^3

Prime Factorization of 11891

Prime Factorization 23 × 47 × 11

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 11891
Product of the distinct prime numbers

The prime factorization of 11891 is 23 × 47 × 11. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 5, 56, 97, 388, 463, 4193, 8676, 25099, 17486, 441794, 331235, 4504536, 5352725, 6460521, 35672436, 469872009, 148297677, 6738064172, 6369530507

Basic calculations (n = 11891)

Multiplication

n×y
n×2 23782
n×3 35673
n×4 47564
n×5 59455

Division

n÷y
n÷2 5945.5
n÷3 3963.6666666667
n÷3 2972.75
n÷5 2378.2

Exponentiation

ny
n2 141395881
n3 1681338420971
n4 19992795163766161
n5 2.3773432729234E+20

Nth Root

y√n
2√n 109.0458619114
3√n 22.82475509663
4√n 10.442502665137
5√n 6.531962395249

Divisors of 11891

1, 11, 23, 47, 253, 517, 1081, 11891

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 -11890
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 11891 can be divided by 8 positive divisors. The sum of these divisors (counting 11891) is 1, the average is 0.125.

Base conversion 11891

Base System Value
2 Binary 10111001110011
3 Ternary 121022102
4 Quaternary 2321303
5 Quinary 340031
6 Senary 131015
8 Octal 27163
10 Decimal 11891
12 Duodecimal 6a6b
16 Hexadecimal 2e73
20 Vigesimal 19eb
36 Base36 96b

Cryptographic Hash Functions

md5 6ef1173b096aa200158bfbc8af3ae8e3
sha1 21c72f60e4dd5fc2a954b464aab977313b9e1f34
sha256 b770d31bafdb58aedc1f1f66390e41ea3a0e002b3e86989edb71cb9a05c5e320
sha512 ac5a0446ac84cccdf2e0ad95e474a9795497e5fbe3dc03872dccb6becfecae04f166d7042a2e5943b0c130678496c4435ec022eef0203d586dfc7eae71e8385a
ripemd-160 6950e21d0e58fabffc16ee4633f0244a8c24e128

11891 as geometric shapes

Circle

Radius = n
Diameter 23782
Circumference 74713.356487672
Area 444208260.99746

Sphere

Radius = n
Volume 7042773908694.3
Surface area 1776833043.9898
Circumference 74713.356487672

Square

Length = n
Perimeter 47564
Area 141395881
Diagonal 16816.413470178

Cube

Length = n
Surface area 848375286
Volume 1681338420971
Space diagonal 20595.816152802

Equilateral Triangle

Length = n
Perimeter 35673
Area 61226212.468241
Altitude 10297.908076401

Triangular Pyramid

Length = n
Surface area 61226212.468241
Volume 198147633156.35
Height 5605.4711567262