21009 (number)

21009 is an odd 5-digits composite number following 21008 and preceding 21010. In scientific notation, it is written as 2.1009 × 10^4. The sum of its digits is 12. It has a total of 3 prime factors and 8 positive divisors. There are 13616 positive integers (up to 21009) that are relatively prime to 21009.

Interesting facts

Basic properties

Name

Name twenty-one thousand nine

Notation

Scientific notation 2.1009 × 10^4
Engineering notation 2.1009 × 10^3

Prime Factorization of 21009

Prime Factorization 3 × 47 × 149

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21009
Product of the distinct prime numbers

The prime factorization of 21009 is 3 × 47 × 149. Since it has a total of 3 prime factors.

Most popular turbo-numbers

7, 10, 8, 76, 927, 678, 9447, 9942, 78197, 41426, 366390, 977743, 1356075, 9955880, 25148590, 87750694, 546456695, 842238153, 7260717400, 4243920234

Basic calculations (n = 21009)

Multiplication

n×y
n×2 42018
n×3 63027
n×4 84036
n×5 105045

Division

n÷y
n÷2 10504.5
n÷3 7003
n÷3 5252.25
n÷5 4201.8

Exponentiation

ny
n2 441378081
n3 9272912103729
n4 194814610387242561
n5 4.0928601496256E+21

Nth Root

y√n
2√n 144.94481708568
3√n 27.593182521151
4√n 12.039303014945
5√n 7.3194942881235

Divisors of 21009

1, 3, 47, 141, 149, 447, 7003, 21009

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 -21008
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 21009 can be divided by 8 positive divisors. The sum of these divisors (counting 21009) is 1, the average is 0.125.

Base conversion 21009

Base System Value
2 Binary 101001000010001
3 Ternary 1001211010
4 Quaternary 11020101
5 Quinary 1133014
6 Senary 241133
8 Octal 51021
10 Decimal 21009
12 Duodecimal 101a9
16 Hexadecimal 5211
20 Vigesimal 2ca9
36 Base36 g7l

Cryptographic Hash Functions

md5 746d3a5820bf0745b12072c64be03429
sha1 e81601f46b8a1af4d7dd809142a640f705212f19
sha256 8b3b888b566d06e58f5119ed9417f7e992befbbb76f31aed7a5fc60a94e5f9b4
sha512 08531ae78082876302cae5a9ab8289335f77bb8f05f0261192dfc9a91a82f7b654548a4f10b08a79e78aca7e36b3a92bfadeb6fade06b2cd8126fe14a4147900
ripemd-160 93328c16b8c02008ed43464bae93d3157b27427b

21009 as geometric shapes

Circle

Radius = n
Diameter 42018
Circumference 132003.44011854
Area 1386630136.7252

Sphere

Radius = n
Volume 38842283389945
Surface area 5546520546.9006
Circumference 132003.44011854

Square

Length = n
Perimeter 84036
Area 441378081
Diagonal 29711.212731896

Cube

Length = n
Surface area 2648268486
Volume 9272912103729
Space diagonal 36388.655416215

Equilateral Triangle

Length = n
Perimeter 63027
Area 191122315.40981
Altitude 18194.327708107

Triangular Pyramid

Length = n
Surface area 191122315.40981
Volume 1092823171648.9
Height 9903.7375772988