21705 (number)

21705 is an odd 5-digits composite number following 21704 and preceding 21706. In scientific notation, it is written as 2.1705 × 10^4. The sum of its digits is 15. It has a total of 3 prime factors and 8 positive divisors. There are 11568 positive integers (up to 21705) that are relatively prime to 21705.

Interesting facts

Basic properties

Name

Name twenty-one thousand seven hundred five

Notation

Scientific notation 2.1705 × 10^4
Engineering notation 2.1705 × 10^3

Prime Factorization of 21705

Prime Factorization 3 × 5 × 1447

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21705
Product of the distinct prime numbers

The prime factorization of 21705 is 3 × 5 × 1447. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 10, 17, 78, 515, 379, 5782, 3222, 44432, 88335, 923997, 944264, 5781805, 7113860, 44067482, 12999343, 632815867, 807079788, 9382896372, 673506461

Basic calculations (n = 21705)

Multiplication

n×y
n×2 43410
n×3 65115
n×4 86820
n×5 108525

Division

n÷y
n÷2 10852.5
n÷3 7235
n÷3 5426.25
n÷5 4341

Exponentiation

ny
n2 471107025
n3 10225377977625
n4 221941829004350625
n5 4.8172473985394E+21

Nth Root

y√n
2√n 147.32616875491
3√n 27.89458663488
4√n 12.137799172622
5√n 7.3673611233226

Divisors of 21705

1, 3, 5, 15, 1447, 4341, 7235, 21705

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 -21704
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 21705 can be divided by 8 positive divisors. The sum of these divisors (counting 21705) is 1, the average is 0.125.

Base conversion 21705

Base System Value
2 Binary 101010011001001
3 Ternary 1002202220
4 Quaternary 11103021
5 Quinary 1143310
6 Senary 244253
8 Octal 52311
10 Decimal 21705
12 Duodecimal 10689
16 Hexadecimal 54c9
20 Vigesimal 2e55
36 Base36 gqx

Cryptographic Hash Functions

md5 4698ab0024dfee6b08645663214f71d6
sha1 072dbe96c22008658738ad8749f067d85afc465c
sha256 47b70527145268f5561811b0fa129fcc478552d85b5917ba60f588f7f312a87f
sha512 e36e29b236f000e48a1877a268b08ef1dbc798d5fa1704dab6eab4b0e52cf70de768601134bf867cf65040c4e7877a01a66e2fd9d3a380f3084187cefdbf3296
ripemd-160 e09111895033b32edb0382c694fa4690054417a4

21705 as geometric shapes

Circle

Radius = n
Diameter 43410
Circumference 136376.53709233
Area 1480026368.7945

Sphere

Radius = n
Volume 42831963112914
Surface area 5920105475.1782
Circumference 136376.53709233

Square

Length = n
Perimeter 86820
Area 471107025
Diagonal 30695.505371308

Cube

Length = n
Surface area 2826642150
Volume 10225377977625
Space diagonal 37594.162778282

Equilateral Triangle

Length = n
Perimeter 65115
Area 203995325.77566
Altitude 18797.081389141

Triangular Pyramid

Length = n
Surface area 203995325.77566
Volume 1205072351362.4
Height 10231.835123769