21008 (number)

21008 is an even 5-digits composite number following 21007 and preceding 21009. In scientific notation, it is written as 2.1008 × 10^4. The sum of its digits is 11. It has a total of 6 prime factors and 20 positive divisors. There are 9600 positive integers (up to 21008) that are relatively prime to 21008.

Interesting facts

Basic properties

Name

Name twenty-one thousand eight

Notation

Scientific notation 2.1008 × 10^4
Engineering notation 2.1008 × 10^3

Prime Factorization of 21008

Prime Factorization 2 × 2 × 2 × 2 × 13 × 101

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2626
Product of the distinct prime numbers

The prime factorization of 21008 is 2 × 2 × 2 × 2 × 13 × 101. Since it has a total of 6 prime factors.

Most popular turbo-numbers

10, 6, 82, 14, 675, 75, 9535, 8878, 23976, 51780, 561578, 865816, 8911561, 2702055, 12830773, 88457981, 504155370, 216315648, 6900056964, 8973664720

Basic calculations (n = 21008)

Multiplication

n×y
n×2 42016
n×3 63024
n×4 84032
n×5 105040

Division

n÷y
n÷2 10504
n÷3 7002.6666666667
n÷3 5252
n÷5 4201.6

Exponentiation

ny
n2 441336064
n3 9271588032512
n4 194777521387012096
n5 4.0918861692984E+21

Nth Root

y√n
2√n 144.94136745595
3√n 27.592744714809
4√n 12.039159748751
5√n 7.3194246071901

Divisors of 21008

1, 2, 4, 8, 13, 16, 26, 52, 101, 104, 202, 208, 404, 808, 1313, 1616, 2626, 5252, 10504, 21008

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21007
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21008 can be divided by 20 positive divisors. The sum of these divisors (counting 21008) is 1, the average is 0.05.

Base conversion 21008

Base System Value
2 Binary 101001000010000
3 Ternary 1001211002
4 Quaternary 11020100
5 Quinary 1133013
6 Senary 241132
8 Octal 51020
10 Decimal 21008
12 Duodecimal 101a8
16 Hexadecimal 5210
20 Vigesimal 2ca8
36 Base36 g7k

Cryptographic Hash Functions

md5 8ed700a6d0de777200111377efb82f53
sha1 e58b2c94bb6c7a019f0f4fa3835c8209ffeef266
sha256 9eec9e14cc6276c9482bd8cb767d83e7af434dded5399f9792163bcc6bb4149f
sha512 b7da48a9f95a248b6fafde0782e98cef592e80b1599d92588e99efc787f58cf884912868c2a14a60f3af9f479616937b9751164371da24cabadba4b5d8363095
ripemd-160 d598971395e2d0fb6fdafcd281ddf1576440f758

21008 as geometric shapes

Circle

Radius = n
Diameter 42016
Circumference 131997.15693323
Area 1386498136.4266

Sphere

Radius = n
Volume 38836737133401
Surface area 5545992545.7065
Circumference 131997.15693323

Square

Length = n
Perimeter 84032
Area 441336064
Diagonal 29709.798518334

Cube

Length = n
Surface area 2648016384
Volume 9271588032512
Space diagonal 36386.923365407

Equilateral Triangle

Length = n
Perimeter 63024
Area 191104121.51512
Altitude 18193.461682703

Triangular Pyramid

Length = n
Surface area 191104121.51512
Volume 1092667128359.5
Height 9903.266172778