18405 (number)

18405 is an odd 5-digits composite number following 18404 and preceding 18406. In scientific notation, it is written as 1.8405 × 10^4. The sum of its digits is 18. It has a total of 3 prime factors and 8 positive divisors. There are 9792 positive integers (up to 18405) that are relatively prime to 18405.

Interesting facts

Basic properties

Name

Name eighteen thousand four hundred five

Notation

Scientific notation 1.8405 × 10^4
Engineering notation 1.8405 × 10^3

Prime Factorization of 18405

Prime Factorization 9 × 5 × 409

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 18405
Product of the distinct prime numbers

The prime factorization of 18405 is 9 × 5 × 409. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 3, 63, 15, 114, 132, 8650, 4442, 4501, 83009, 263728, 932957, 3153065, 4653526, 32192999, 54958897, 328425818, 22859996, 2954001193, 2546149492

Basic calculations (n = 18405)

Multiplication

n×y
n×2 36810
n×3 55215
n×4 73620
n×5 92025

Division

n÷y
n÷2 9202.5
n÷3 6135
n÷3 4601.25
n÷5 3681

Exponentiation

ny
n2 338744025
n3 6234583780125
n4 114747514473200625
n5 2.1119280038793E+21

Nth Root

y√n
2√n 135.66502865514
3√n 26.402513534784
4√n 11.647533157503
5√n 7.1283196195157

Divisors of 18405

1, 5, 9, 45, 409, 2045, 3681, 18405

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 -18404
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 18405 can be divided by 8 positive divisors. The sum of these divisors (counting 18405) is 1, the average is 0.125.

Base conversion 18405

Base System Value
2 Binary 100011111100101
3 Ternary 221020200
4 Quaternary 10133211
5 Quinary 1042110
6 Senary 221113
8 Octal 43745
10 Decimal 18405
12 Duodecimal a799
16 Hexadecimal 47e5
20 Vigesimal 2605
36 Base36 e79

Cryptographic Hash Functions

md5 99f7ba97af7b4f90942732788cdb9652
sha1 dd86fe720f9a95009b991fb8005d1cca034acc91
sha256 0f3a92fd742f4fa41cc8319e8b7b6e4a0f0e1f657d803d3c866f6d72a4cbb9b7
sha512 72ff179206fd7172765ad9696c93c8a183e89ca2dfa65c37e42a416d19068246f605c1ca6c4c040b40c6ae942948d9585d9abc55bb48d4d961f9a90835fae615
ripemd-160 6710d7b77f30210308f77d708d9e3afd1e6ecdaa

18405 as geometric shapes

Circle

Radius = n
Diameter 36810
Circumference 115642.02557864
Area 1064195740.3874

Sphere

Radius = n
Volume 26115363469108
Surface area 4256782961.5497
Circumference 115642.02557864

Square

Length = n
Perimeter 73620
Area 338744025
Diagonal 26028.600615477

Cube

Length = n
Surface area 2032464150
Volume 6234583780125
Space diagonal 31878.395113305

Equilateral Triangle

Length = n
Perimeter 55215
Area 146680465.5151
Altitude 15939.197556653

Triangular Pyramid

Length = n
Surface area 146680465.5151
Volume 734752744800.34
Height 8676.2002051589