21081440 (number)

21081440 is an even 8-digits composite number following 21081439 and preceding 21081441. In scientific notation, it is written as 2.1081440 × 10^7. The sum of its digits is 20. It has a total of 7 prime factors and 24 positive divisors. There are 8432512 positive integers (up to 21081440) that are relatively prime to 21081440.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-one thousand four hundred forty

Notation

Scientific notation 2.1081440 × 10^7
Engineering notation 2.1081440 × 10^6

Prime Factorization of 21081440

Prime Factorization 2 × 2 × 2 × 2 × 2 × 5 × 131759

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 1317590
Product of the distinct prime numbers

The prime factorization of 21081440 is 2 × 2 × 2 × 2 × 2 × 5 × 131759. Since it has a total of 7 prime factors.

Most popular turbo-numbers

3, 2, 69, 32, 882, 80, 9097, 4228, 26673, 47070, 980950, 601166, 6463651, 4692027, 92069326, 91165720, 35777968, 377577160, 6483429312, 1837464640

Basic calculations (n = 21081440)

Multiplication

n×y
n×2 42162880
n×3 63244320
n×4 84325760
n×5 105407200

Division

n÷y
n÷2 10540720
n÷3 7027146.6666667
n÷3 5270360
n÷5 4216288

Exponentiation

ny
n2 444427112473600
n3 9.3691635059855E+21
n4 1.9751545830162E+29
n5 4.1639102832581E+36

Nth Root

y√n
2√n 4591.4529290846
3√n 276.24860328389
4√n 67.760260692272
5√n 29.159498771887

Divisors of 21081440

1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131759, 263518, 527036, 658795, 1054072, 1317590, 2108144, 2635180, 4216288, 5270360, 10540720, 21081440

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21081439
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21081440 can be divided by 24 positive divisors. The sum of these divisors (counting 21081440) is 1, the average is 0.041666666666667.

Base conversion 21081440

Base System Value
2 Binary 1010000011010110101100000
3 Ternary 1110200001022002
4 Quaternary 1100122311200
5 Quinary 20344101230
6 Senary 2031503132
8 Octal 120326540
10 Decimal 21081440
12 Duodecimal 7087aa8
16 Hexadecimal 141ad60
20 Vigesimal 6bf3c0
36 Base36 cjujk

Cryptographic Hash Functions

md5 e589cb3e90eac5b3cce2f0b022ee7bf5
sha1 09faed0191b7ab5068ff33d0646d7102b81539a6
sha256 02df19e5d363663fb6689b6babbfbce174ffa86e4b30ce3def55634c04a990b4
sha512 cfd409e251f7729497a2de14dcc3e51effc7f94303e9f2cfb04eda67c037f5ac74e63312e591d33287be88f850d9a22d3d46f851947d0eda39cbff10dff1e7dd
ripemd-160 0730d2f6b9111c0de84623cdd293738e91cdaa72

21081440 as geometric shapes

Circle

Radius = n
Diameter 42162880
Circumference 132458594.06219
Area 1.3962089516032E+15

Sphere

Radius = n
Volume 3.9245460320914E+22
Surface area 5.5848358064127E+15
Circumference 132458594.06219

Square

Length = n
Perimeter 84325760
Area 444427112473600
Diagonal 29813658.362355

Cube

Length = n
Surface area 2666562674841600
Volume 9.3691635059855E+21
Space diagonal 36514125.176715

Equilateral Triangle

Length = n
Perimeter 63244320
Area 1.9244258476635E+14
Altitude 18257062.588357

Triangular Pyramid

Length = n
Surface area 1.9244258476635E+14
Volume 1.104166508188E+21
Height 9937886.1207849