28005 (number)

28005 is an odd 5-digits composite number following 28004 and preceding 28006. In scientific notation, it is written as 2.8005 × 10^4. The sum of its digits is 15. It has a total of 3 prime factors and 8 positive divisors. There are 14928 positive integers (up to 28005) that are relatively prime to 28005.

Interesting facts

Basic properties

Name

Name twenty-eight thousand five

Notation

Scientific notation 2.8005 × 10^4
Engineering notation 2.8005 × 10^3

Prime Factorization of 28005

Prime Factorization 3 × 5 × 1867

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28005
Product of the distinct prime numbers

The prime factorization of 28005 is 3 × 5 × 1867. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 6, 12, 37, 148, 540, 2894, 4251, 87796, 95674, 166093, 315021, 6251114, 2917801, 65137836, 87469718, 168596466, 329266106, 2412905505, 7399766986

Basic calculations (n = 28005)

Multiplication

n×y
n×2 56010
n×3 84015
n×4 112020
n×5 140025

Division

n÷y
n÷2 14002.5
n÷3 9335
n÷3 7001.25
n÷5 5601

Exponentiation

ny
n2 784280025
n3 21963762100125
n4 615095157614000625
n5 1.722573988898E+22

Nth Root

y√n
2√n 167.34694499751
3√n 30.367697104614
4√n 12.93626472354
5√n 7.752595332585

Divisors of 28005

1, 3, 5, 15, 1867, 5601, 9335, 28005

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 -28004
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 28005 can be divided by 8 positive divisors. The sum of these divisors (counting 28005) is 1, the average is 0.125.

Base conversion 28005

Base System Value
2 Binary 110110101100101
3 Ternary 1102102020
4 Quaternary 12311211
5 Quinary 1344010
6 Senary 333353
8 Octal 66545
10 Decimal 28005
12 Duodecimal 14259
16 Hexadecimal 6d65
20 Vigesimal 3a05
36 Base36 llx

Cryptographic Hash Functions

md5 c1481a88d8e582ce58f9413d5ac93360
sha1 35621c53fb152225cb075a993be9595508f96624
sha256 152ba1a6beec6a16017cd2f232916d56421cff979f2eed42ea784ca76afa8b11
sha512 e75d94b3fc4f9a6101c394882dbe6ef5c3595d47607a55970bf13009b20db36820157027ced4801f36c802022233e83227e36f2b6e1a8d495d6eac4ba4740b63
ripemd-160 b70129b557efd1f40e2e94f9ff40e374a2ae97e7

28005 as geometric shapes

Circle

Radius = n
Diameter 56010
Circumference 175960.60452756
Area 2463888364.8972

Sphere

Radius = n
Volume 92001591545262
Surface area 9855553459.5889
Circumference 175960.60452756

Square

Length = n
Perimeter 112020
Area 784280025
Diagonal 39605.050814259

Cube

Length = n
Surface area 4705680150
Volume 21963762100125
Space diagonal 48506.082865966

Equilateral Triangle

Length = n
Perimeter 84015
Area 339603212.66535
Altitude 24253.041432983

Triangular Pyramid

Length = n
Surface area 339603212.66535
Volume 2588454186894.4
Height 13201.683604753