20405728 (number)

20405728 is an even 8-digits composite number following 20405727 and preceding 20405729. In scientific notation, it is written as 2.0405728 × 10^7. The sum of its digits is 28. It has a total of 7 prime factors and 24 positive divisors. There are 8745216 positive integers (up to 20405728) that are relatively prime to 20405728.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0405728 × 10^7
Engineering notation 2.0405728 × 10^6

Prime Factorization of 20405728

Prime Factorization 2 × 2 × 2 × 2 × 2 × 7 × 91097

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 1275358
Product of the distinct prime numbers

The prime factorization of 20405728 is 2 × 2 × 2 × 2 × 2 × 7 × 91097. Since it has a total of 7 prime factors.

Most popular turbo-numbers

6, 9, 52, 60, 352, 335, 1200, 6435, 19484, 88161, 130707, 408204, 1558047, 7604906, 6797452, 46214515, 317285817, 309958771, 7724055892, 2962762499

Basic calculations (n = 20405728)

Multiplication

n×y
n×2 40811456
n×3 61217184
n×4 81622912
n×5 102028640

Division

n÷y
n÷2 10202864
n÷3 6801909.3333333
n÷3 5101432
n÷5 4081145.6

Exponentiation

ny
n2 416393735209984
n3 8.496817301599E+21
n4 1.7338374272212E+29
n5 3.5380214936096E+36

Nth Root

y√n
2√n 4517.2699720074
3√n 273.26501299928
4√n 67.210638830526
5√n 28.970128307309

Divisors of 20405728

1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 91097, 182194, 364388, 637679, 728776, 1275358, 1457552, 2550716, 2915104, 5101432, 10202864, 20405728

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 -20405727
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 20405728 can be divided by 24 positive divisors. The sum of these divisors (counting 20405728) is 1, the average is 0.041666666666667.

Base conversion 20405728

Base System Value
2 Binary 1001101110101110111100000
3 Ternary 1102101201101201
4 Quaternary 1031311313200
5 Quinary 20210440403
6 Senary 2005210544
8 Octal 115656740
10 Decimal 20405728
12 Duodecimal 6a00a54
16 Hexadecimal 1375de0
20 Vigesimal 67ae68
36 Base36 c5d5s

Cryptographic Hash Functions

md5 5976a217b94394cb44aa44266ed203cd
sha1 1a978f171b16e9d6cbf74454c4ca58eea0a474b5
sha256 049fc56e249b6137e32958640b85b4230f81914975217685c2a86829ec67e66e
sha512 dd6d0e3a52bd0175e4dfac555f05afd68256436e354c2fb1bfe3a57777c03c327720afb4d58c4491fe8d2de3d6d24d1c0d5ae0e0d0c32b6a35c83ac08acae60d
ripemd-160 a11317b9c0ef293fee3e2d49b1f57b18132d5213

20405728 as geometric shapes

Circle

Radius = n
Diameter 40811456
Circumference 128212970.3519
Area 1.3081394995365E+15

Sphere

Radius = n
Volume 3.5591385084797E+22
Surface area 5.232557998146E+15
Circumference 128212970.3519

Square

Length = n
Perimeter 81622912
Area 416393735209984
Diagonal 28858057.287696

Cube

Length = n
Surface area 2498362411259904
Volume 8.496817301599E+21
Space diagonal 35343757.661431

Equilateral Triangle

Length = n
Perimeter 61217184
Area 1.8030377633427E+14
Altitude 17671878.830715

Triangular Pyramid

Length = n
Surface area 1.8030377633427E+14
Volume 1.0013595220773E+21
Height 9619352.4292321