21505730 (number)

21505730 is an even 8-digits composite number following 21505729 and preceding 21505731. In scientific notation, it is written as 2.1505730 × 10^7. The sum of its digits is 23. It has a total of 4 prime factors and 16 positive divisors. There are 8392320 positive integers (up to 21505730) that are relatively prime to 21505730.

Interesting facts

Basic properties

Name

Name twenty-one million five hundred five thousand seven hundred thirty

Notation

Scientific notation 2.1505730 × 10^7
Engineering notation 2.1505730 × 10^6

Prime Factorization of 21505730

Prime Factorization 2 × 5 × 41 × 52453

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21505730
Product of the distinct prime numbers

The prime factorization of 21505730 is 2 × 5 × 41 × 52453. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 9, 78, 20, 51, 265, 6417, 444, 91775, 6854, 575882, 264941, 8322537, 3062762, 59365620, 50220282, 419369525, 637569349, 5989353123, 7240245540

Basic calculations (n = 21505730)

Multiplication

n×y
n×2 43011460
n×3 64517190
n×4 86022920
n×5 107528650

Division

n÷y
n÷2 10752865
n÷3 7168576.6666667
n÷3 5376432.5
n÷5 4301146

Exponentiation

ny
n2 462496422832900
n3 9.9463231954102E+21
n4 2.1390294113323E+29
n5 4.6001388982171E+36

Nth Root

y√n
2√n 4637.4270883756
3√n 278.08958864057
4√n 68.09865702329
5√n 29.275939284701

Divisors of 21505730

1, 2, 5, 10, 41, 82, 205, 410, 52453, 104906, 262265, 524530, 2150573, 4301146, 10752865, 21505730

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21505729
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21505730 can be divided by 16 positive divisors. The sum of these divisors (counting 21505730) is 1, the average is 0.0625.

Base conversion 21505730

Base System Value
2 Binary 1010010000010011011000010
3 Ternary 1111110121022112
4 Quaternary 1102002123002
5 Quinary 21001140410
6 Senary 2044535322
8 Octal 122023302
10 Decimal 21505730
12 Duodecimal 7251542
16 Hexadecimal 14826c2
20 Vigesimal 6e846a
36 Base36 csxxe

Cryptographic Hash Functions

md5 206905165de7901a6047894f6f60a57d
sha1 17b99da6c399958c4e3182e8c2484e0e9caa8d21
sha256 d8d6a228cce091bf24c4ad5007cc68f20e64fdec8c97d589b9a1cbb28e672de0
sha512 b683d6d9b02cdd3c21cf4adcdd8acfe0f8a90932c5b349f9aaad437c181c1b120bdf055562979bf677a9590c34fd238c6424fcd6384817e3cae6cd0497dc4034
ripemd-160 f4482391bc87879d089b7a9dac21f087a1543130

21505730 as geometric shapes

Circle

Radius = n
Diameter 43011460
Circumference 135124486.75617
Area 1.4529753642834E+15

Sphere

Radius = n
Volume 4.1663061174574E+22
Surface area 5.8119014571336E+15
Circumference 135124486.75617

Square

Length = n
Perimeter 86022920
Area 462496422832900
Diagonal 30413695.034734

Cube

Length = n
Surface area 2774978536997400
Volume 9.9463231954102E+21
Space diagonal 37249017.013858

Equilateral Triangle

Length = n
Perimeter 64517190
Area 2.0026682566636E+14
Altitude 18624508.506929

Triangular Pyramid

Length = n
Surface area 2.0026682566636E+14
Volume 1.1721854298913E+21
Height 10137898.344911