21065 (number)

21065 is an odd 5-digits composite number following 21064 and preceding 21066. In scientific notation, it is written as 2.1065 × 10^4. The sum of its digits is 14. It has a total of 3 prime factors and 8 positive divisors. There are 15280 positive integers (up to 21065) that are relatively prime to 21065.

Interesting facts

Basic properties

Name

Name twenty-one thousand sixty-five

Notation

Scientific notation 2.1065 × 10^4
Engineering notation 2.1065 × 10^3

Prime Factorization of 21065

Prime Factorization 5 × 11 × 383

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21065
Product of the distinct prime numbers

The prime factorization of 21065 is 5 × 11 × 383. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 1, 81, 67, 865, 942, 8777, 839, 73171, 36362, 331258, 775627, 9030474, 2527531, 66639360, 3594626, 26449193, 109059324, 6854747060, 4857084168

Basic calculations (n = 21065)

Multiplication

n×y
n×2 42130
n×3 63195
n×4 84260
n×5 105325

Division

n÷y
n÷2 10532.5
n÷3 7021.6666666667
n÷3 5266.25
n÷5 4213

Exponentiation

ny
n2 443734225
n3 9347261449625
n4 196900062436350625
n5 4.1476998152217E+21

Nth Root

y√n
2√n 145.13786549347
3√n 27.617677536173
4√n 12.047317771748
5√n 7.3233921923292

Divisors of 21065

1, 5, 11, 55, 383, 1915, 4213, 21065

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 -21064
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 21065 can be divided by 8 positive divisors. The sum of these divisors (counting 21065) is 1, the average is 0.125.

Base conversion 21065

Base System Value
2 Binary 101001001001001
3 Ternary 1001220012
4 Quaternary 11021021
5 Quinary 1133230
6 Senary 241305
8 Octal 51111
10 Decimal 21065
12 Duodecimal 10235
16 Hexadecimal 5249
20 Vigesimal 2cd5
36 Base36 g95

Cryptographic Hash Functions

md5 21445b7069345a1a850ee2daacfd5d8e
sha1 6e5cf6951b0b89a2504b5f587fce146c29f668ae
sha256 40d00ee7972712227e70af9a32574e97514c83c805feba680426d057c9b2d37a
sha512 0ba534a29ef4749534eac88cc099620de8dcbf1be5196ecb1ff9bcb014bf824b1af0eaada1fba99af71bd6beaf9b192446b2a3782b94fc66b316f30d52bc44b1
ripemd-160 2eb3f1128b9e83e5e72d06336166f395c69feb34

21065 as geometric shapes

Circle

Radius = n
Diameter 42130
Circumference 132355.29849574
Area 1394032181.4064

Sphere

Radius = n
Volume 39153717201767
Surface area 5576128725.6254
Circumference 132355.29849574

Square

Length = n
Perimeter 84260
Area 443734225
Diagonal 29790.408691389

Cube

Length = n
Surface area 2662405350
Volume 9347261449625
Space diagonal 36485.650261438

Equilateral Triangle

Length = n
Perimeter 63195
Area 192142555.6893
Altitude 18242.825130719

Triangular Pyramid

Length = n
Surface area 192142555.6893
Volume 1101585326092.2
Height 9930.1362304631