20728305 (number)

20728305 is an odd 8-digits composite number following 20728304 and preceding 20728306. In scientific notation, it is written as 2.0728305 × 10^7. The sum of its digits is 27. It has a total of 5 prime factors and 24 positive divisors. There are 9797760 positive integers (up to 20728305) that are relatively prime to 20728305.

Interesting facts

Basic properties

Name

Name twenty million seven hundred twenty-eight thousand three hundred five

Notation

Scientific notation 2.0728305 × 10^7
Engineering notation 2.0728305 × 10^6

Prime Factorization of 20728305

Prime Factorization 5 × 9 × 9 × 1651 × 31

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 2303145
Product of the distinct prime numbers

The prime factorization of 20728305 is 5 × 9 × 9 × 1651 × 31. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 5, 45, 92, 138, 119, 1425, 8000, 85853, 15461, 692596, 672903, 1068161, 1584361, 79592795, 83412295, 489888373, 603669799, 9010000367, 3656290995

Basic calculations (n = 20728305)

Multiplication

n×y
n×2 41456610
n×3 62184915
n×4 82913220
n×5 103641525

Division

n÷y
n÷2 10364152.5
n÷3 6909435
n÷3 5182076.25
n÷5 4145661

Exponentiation

ny
n2 429662628173025
n3 8.9061780038721E+21
n4 1.8460997404855E+29
n5 3.8266518481205E+36

Nth Root

y√n
2√n 4552.8348311794
3√n 274.69743030414
4√n 67.474697710915
5√n 29.061147455598

Divisors of 20728305

1, 5, 9, 31, 45, 81, 155, 279, 405, 1395, 1651, 2511, 8255, 12555, 14859, 51181, 74295, 133731, 255905, 460629, 668655, 2303145, 4145661, 20728305

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 -20728304
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 20728305 can be divided by 24 positive divisors. The sum of these divisors (counting 20728305) is 1, the average is 0.041666666666667.

Base conversion 20728305

Base System Value
2 Binary 1001111000100100111110001
3 Ternary 1110000002220000
4 Quaternary 1033010213301
5 Quinary 20301301210
6 Senary 2020140213
8 Octal 117044761
10 Decimal 20728305
12 Duodecimal 6b37669
16 Hexadecimal 13c49f1
20 Vigesimal 69b0f5
36 Base36 cca29

Cryptographic Hash Functions

md5 b1680fb8dbf48d5217f1f135edd8b6eb
sha1 2df80f899fab6670f4bbd14060fad138847a124f
sha256 f8a4a6ff877758ae745efb41877a33af893712dc7c11a939c6e5fea3f51a0e97
sha512 b560c606574f6014cfb2b14c7a3cd3b2829a8d6d3cac76fe544073b09568b99b53d5e3b9819589d544e1a313554da48e115653f9ecc7bc0f167c722dc2514ca7
ripemd-160 eb4f2c7e2e7c6121d115b11f8df0cdccbce50e40

20728305 as geometric shapes

Circle

Radius = n
Diameter 41456610
Circumference 130239781.41874
Area 1.3498249561905E+15

Sphere

Radius = n
Volume 3.7306111184703E+22
Surface area 5.3992998247618E+15
Circumference 130239781.41874

Square

Length = n
Perimeter 82913220
Area 429662628173025
Diagonal 29314250.056006

Cube

Length = n
Surface area 2577975769038150
Volume 8.9061780038721E+21
Space diagonal 35902477.414784

Equilateral Triangle

Length = n
Perimeter 62184915
Area 1.8604937552731E+14
Altitude 17951238.707392

Triangular Pyramid

Length = n
Surface area 1.8604937552731E+14
Volume 1.0496031434987E+21
Height 9771416.6853353