2005 (number)

2005 is an odd 4-digits composite number following 2004 and preceding 2006. In scientific notation, it is written as 2.005 × 10^3. The sum of its digits is 7. It has a total of 2 prime factors and 4 positive divisors. There are 1600 positive integers (up to 2005) that are relatively prime to 2005.

Interesting facts

Basic properties

Name

Name two thousand five

Notation

Scientific notation 2.005 × 10^3
Engineering notation 2.005 × 10^3

Prime Factorization of 2005

Prime Factorization 5 × 401

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 2005
Product of the distinct prime numbers

The prime factorization of 2005 is 5 × 401. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 9, 8, 22, 225, 616, 6311, 6924, 79907, 48816, 371217, 241843, 7333724, 4061934, 33272959, 28307055, 741292130, 170788045, 9756175625, 985614808

Basic calculations (n = 2005)

Multiplication

n×y
n×2 4010
n×3 6015
n×4 8020
n×5 10025

Division

n÷y
n÷2 1002.5
n÷3 668.33333333333
n÷3 501.25
n÷5 401

Exponentiation

ny
n2 4020025
n3 8060150125
n4 16160601000625
n5 32402005006253125

Nth Root

y√n
2√n 44.777226354476
3√n 12.609701103711
4√n 6.6915787639746
5√n 4.5753347614314

Divisors of 2005

1, 5, 401, 2005

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 -2004
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 2005 can be divided by 4 positive divisors. The sum of these divisors (counting 2005) is 1, the average is 0.25.

Base conversion 2005

Base System Value
2 Binary 11111010101
3 Ternary 2202021
4 Quaternary 133111
5 Quinary 31010
6 Senary 13141
8 Octal 3725
10 Decimal 2005
12 Duodecimal 11b1
16 Hexadecimal 7d5
20 Vigesimal 505
36 Base36 1jp

Cryptographic Hash Functions

md5 d47268e9db2e9aa3827bba3afb7ff94a
sha1 23a0538f53ccbf131a1f79874d3805ac4ed108fc
sha256 a20a2b7bb0842d5cf8a0c06c626421fd51ec103925c1819a51271f2779afa730
sha512 ac252532745ed172e5cc279fb402070940acf256c18c0b898a8f8bbf5f4587b5991f6fbecadf3c2ee0a3a0446e88195698575b7d56cf46a649361ecf713918b3
ripemd-160 67aa7e0a9726b91aef1dcde8a77a4997e72419b5

2005 as geometric shapes

Circle

Radius = n
Diameter 4010
Circumference 12597.786540895
Area 12629281.007247

Sphere

Radius = n
Volume 33762277892.708
Surface area 50517124.028989
Circumference 12597.786540895

Square

Length = n
Perimeter 8020
Area 4020025
Diagonal 2835.4981925581

Cube

Length = n
Surface area 24120150
Volume 8060150125
Space diagonal 3472.7618691756

Equilateral Triangle

Length = n
Perimeter 6015
Area 1740721.8869243
Altitude 1736.3809345878

Triangular Pyramid

Length = n
Surface area 1740721.8869243
Volume 949897801.79485
Height 945.16606418602