21081438 (number)

21081438 is an even 8-digits composite number following 21081437 and preceding 21081439. In scientific notation, it is written as 2.1081438 × 10^7. The sum of its digits is 27. It has a total of 7 prime factors and 64 positive divisors. There are 5878656 positive integers (up to 21081438) that are relatively prime to 21081438.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-one thousand four hundred thirty-eight

Notation

Scientific notation 2.1081438 × 10^7
Engineering notation 2.1081438 × 10^6

Prime Factorization of 21081438

Prime Factorization 2 × 3 × 7 × 3 × 43 × 3 × 1297

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2342382
Product of the distinct prime numbers

The prime factorization of 21081438 is 2 × 3 × 7 × 3 × 43 × 3 × 1297. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21081438)

Multiplication

n×y
n×2 42162876
n×3 63244314
n×4 84325752
n×5 105407190

Division

n÷y
n÷2 10540719
n÷3 7027146
n÷3 5270359.5
n÷5 4216287.6

Exponentiation

ny
n2 444427028147844
n3 9.369160839423E+21
n4 1.9751538334832E+29
n5 4.1639083081039E+36

Nth Root

y√n
2√n 4591.4527112887
3√n 276.24859454797
4√n 67.760259085165
5√n 29.159498218613

Divisors of 21081438

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21081437
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21081438 can be divided by 64 positive divisors. The sum of these divisors (counting 21081438) is 1, the average is 0.015625.

Base conversion 21081438

Base System Value
2 Binary 1010000011010110101011110
3 Ternary 1110200001022000
4 Quaternary 1100122311132
5 Quinary 20344101223
6 Senary 2031503130
8 Octal 120326536
10 Decimal 21081438
12 Duodecimal 7087aa6
16 Hexadecimal 141ad5e
20 Vigesimal 6bf3bi
36 Base36 cjuji

Cryptographic Hash Functions

md5 62e2d6599a78bed45152924845e1dd16
sha1 091ac05d46cd65d8e04fd194929b8a105276b06a
sha256 fb301f40ec9ec850454efac60225ea86bf2eef2bac7dc627936d52fbcda790cc
sha512 5d6be1b948edf2a7b07fba5ac3fda305988b89211221971194187d4db03010dfb4fdafdba0c9f74cdd10b69ac11518e1f505ccbc96a969e0d946296c5c1f5e71
ripemd-160 781bac8b2b42b90d33e4eb99827c2e4178d9344d

21081438 as geometric shapes

Circle

Radius = n
Diameter 42162876
Circumference 132458581.49582
Area 1.396208686686E+15

Sphere

Radius = n
Volume 3.9245449151243E+22
Surface area 5.584834746744E+15
Circumference 132458581.49582

Square

Length = n
Perimeter 84325752
Area 444427028147844
Diagonal 29813655.533928

Cube

Length = n
Surface area 2666562168887064
Volume 9.369160839423E+21
Space diagonal 36514121.712613

Equilateral Triangle

Length = n
Perimeter 63244314
Area 1.9244254825223E+14
Altitude 18257060.856307

Triangular Pyramid

Length = n
Surface area 1.9244254825223E+14
Volume 1.1041661939306E+21
Height 9937885.1779758