20781720 (number)

20781720 is an even 8-digits composite number following 20781719 and preceding 20781721. In scientific notation, it is written as 2.0781720 × 10^7. The sum of its digits is 27. It has a total of 5 prime factors and 16 positive divisors. There are 5541696 positive integers (up to 20781720) that are relatively prime to 20781720.

Interesting facts

Basic properties

Name

Name twenty million seven hundred eighty-one thousand seven hundred twenty

Notation

Scientific notation 2.0781720 × 10^7
Engineering notation 2.0781720 × 10^6

Prime Factorization of 20781720

Prime Factorization 2 × 2 × 2 × 45 × 57727

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 5195430
Product of the distinct prime numbers

The prime factorization of 20781720 is 2 × 2 × 2 × 45 × 57727. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 4, 15, 15, 91, 25, 1254, 5850, 54885, 13968, 557636, 522710, 6142704, 3568843, 6642222, 12189766, 736864635, 849708704, 4964295803, 4441637616

Basic calculations (n = 20781720)

Multiplication

n×y
n×2 41563440
n×3 62345160
n×4 83126880
n×5 103908600

Division

n÷y
n÷2 10390860
n÷3 6927240
n÷3 5195430
n÷5 4156344

Exponentiation

ny
n2 431879886158400
n3 8.9752068677757E+21
n4 1.8652023606819E+29
n5 3.8762113203031E+36

Nth Root

y√n
2√n 4558.6971823099
3√n 274.93318486956
4√n 67.518124842963
5√n 29.076109639953

Divisors of 20781720

1, 2, 4, 8, 45, 90, 180, 360, 57727, 115454, 230908, 461816, 2597715, 5195430, 10390860, 20781720

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 -20781719
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 20781720 can be divided by 16 positive divisors. The sum of these divisors (counting 20781720) is 1, the average is 0.0625.

Base conversion 20781720

Base System Value
2 Binary 1001111010001101010011000
3 Ternary 1110002211011100
4 Quaternary 1033101222120
5 Quinary 20310003340
6 Senary 2021231400
8 Octal 117215230
10 Decimal 20781720
12 Duodecimal 6b62560
16 Hexadecimal 13d1a98
20 Vigesimal 69he60
36 Base36 cdfa0

Cryptographic Hash Functions

md5 c72ddb7d612e476150e8f8e72539eceb
sha1 1e47167fccb028fb1d2fa18cba75c319612e712b
sha256 5156db062a47d2e108fb10fbc470f53857f6e250259c50d18e360cda82ecfc50
sha512 d06f197b3d6d354c101ac5977f2c31d04bee4433ea4ba4da8b34ea7fcb3ae60b1991ef4a2a66ca398be223d78b4030469e16fb1e84a5325f8514ab7853048303
ripemd-160 e1c02cb19fa66adaa40a35d6c22ccca0ed710e12

20781720 as geometric shapes

Circle

Radius = n
Diameter 41563440
Circumference 130575397.76192
Area 1.3567906775884E+15

Sphere

Radius = n
Volume 3.7595258613671E+22
Surface area 5.4271627103537E+15
Circumference 130575397.76192

Square

Length = n
Perimeter 83126880
Area 431879886158400
Diagonal 29389790.27344

Cube

Length = n
Surface area 2591279316950400
Volume 8.9752068677757E+21
Space diagonal 35994994.90867

Equilateral Triangle

Length = n
Perimeter 62345160
Area 1.8700947639835E+14
Altitude 17997497.454335

Triangular Pyramid

Length = n
Surface area 1.8700947639835E+14
Volume 1.0577382731261E+21
Height 9796596.7578134