18986 (number)

18986 is an even 5-digits composite number following 18985 and preceding 18987. In scientific notation, it is written as 1.8986 × 10^4. The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors. There are 8620 positive integers (up to 18986) that are relatively prime to 18986.

Interesting facts

Basic properties

Name

Name eighteen thousand nine hundred eighty-six

Notation

Scientific notation 1.8986 × 10^4
Engineering notation 1.8986 × 10^3

Prime Factorization of 18986

Prime Factorization 2 × 11 × 863

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 18986
Product of the distinct prime numbers

The prime factorization of 18986 is 2 × 11 × 863. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 8, 66, 75, 802, 48, 6478, 1175, 50148, 50081, 499232, 310812, 1450871, 5056322, 67913950, 50683417, 815261951, 230697693, 3503879979, 201896927

Basic calculations (n = 18986)

Multiplication

n×y
n×2 37972
n×3 56958
n×4 75944
n×5 94930

Division

n÷y
n÷2 9493
n÷3 6328.6666666667
n÷3 4746.5
n÷5 3797.2

Exponentiation

ny
n2 360468196
n3 6843849169256
n4 129937320327494416
n5 2.4669899637378E+21

Nth Root

y√n
2√n 137.78969482512
3√n 26.677460907852
4√n 11.738385528901
5√n 7.1727665351595

Divisors of 18986

1, 2, 11, 22, 863, 1726, 9493, 18986

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 -18985
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 18986 can be divided by 8 positive divisors. The sum of these divisors (counting 18986) is 1, the average is 0.125.

Base conversion 18986

Base System Value
2 Binary 100101000101010
3 Ternary 222001012
4 Quaternary 10220222
5 Quinary 1101421
6 Senary 223522
8 Octal 45052
10 Decimal 18986
12 Duodecimal aba2
16 Hexadecimal 4a2a
20 Vigesimal 2796
36 Base36 ene

Cryptographic Hash Functions

md5 b5c480f68b9454070586dd8151546e16
sha1 65db4571b841a4642757c1dfdac6306b76953ca3
sha256 c78adcbb37dd3c2b4ab9784da62cb71193d6ab23723fd7eac94f3f814d75682e
sha512 0c2149c6ccf3fa22354ffa2ab411bdb039dae9f2b8454eef740622a89b78e6fc9a92461b65087b5d5d485eb3d50fd1a407e0a7fe6d481f5f194ad61466543322
ripemd-160 10ec9254970a932e13e6b8c8d70486b1fa2b3272

18986 as geometric shapes

Circle

Radius = n
Diameter 37972
Circumference 119292.55624211
Area 1132444236.4064

Sphere

Radius = n
Volume 28667448363215
Surface area 4529776945.6255
Circumference 119292.55624211

Square

Length = n
Perimeter 75944
Area 360468196
Diagonal 26850.258695216

Cube

Length = n
Surface area 2162809176
Volume 6843849169256
Space diagonal 32884.716632503

Equilateral Triangle

Length = n
Perimeter 56958
Area 156087307.49617
Altitude 16442.358316251

Triangular Pyramid

Length = n
Surface area 156087307.49617
Volume 806555359499.81
Height 8950.0862317385