28261728 (number)

28261728 is an even 8-digits composite number following 28261727 and preceding 28261729. In scientific notation, it is written as 2.8261728 × 10^7. The sum of its digits is 36. It has a total of 9 prime factors and 72 positive divisors. There are 8553600 positive integers (up to 28261728) that are relatively prime to 28261728.

Interesting facts

Basic properties

Name

Name twenty-eight million two hundred sixty-one thousand seven hundred twenty-eight

Notation

Scientific notation 2.8261728 × 10^7
Engineering notation 2.8261728 × 10^6

Prime Factorization of 28261728

Prime Factorization 2 × 2 × 2 × 2 × 2 × 9 × 11 × 11 × 811

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 9
Total number of prime factors
rad Radical 160578
Product of the distinct prime numbers

The prime factorization of 28261728 is 2 × 2 × 2 × 2 × 2 × 9 × 11 × 11 × 811. Since it has a total of 9 prime factors.

Most popular turbo-numbers

5, 3, 90, 83, 593, 163, 3238, 619, 29373, 31867, 671349, 920796, 5956663, 2176715, 59110707, 75921319, 764387087, 913845134, 9003325881, 6589873567

Basic calculations (n = 28261728)

Multiplication

n×y
n×2 56523456
n×3 84785184
n×4 113046912
n×5 141308640

Division

n÷y
n÷2 14130864
n÷3 9420576
n÷3 7065432
n÷5 5652345.6

Exponentiation

ny
n2 798725269545984
n3 2.2573356314635E+22
n4 6.379620562113E+29
n5 1.8029910106965E+37

Nth Root

y√n
2√n 5316.176069319
3√n 304.60210768343
4√n 72.912111952124
5√n 30.920018312388

Divisors of 28261728

1, 2, 4, 8, 9, 11, 16, 18, 22, 32, 36, 44, 72, 88, 99, 121, 144, 176, 198, 242, 288, 352, 396, 484, 792, 811, 968, 1089, 1584, 1622, 1936, 2178, 3168, 3244, 3872, 4356, 6488, 7299, 8712, 8921, 12976, 14598, 17424, 17842, 25952, 29196, 34848, 35684, 58392, 71368, 80289, 98131, 116784, 142736, 160578, 196262, 233568, 285472, 321156, 392524, 642312, 785048, 883179, 1284624, 1570096, 1766358, 2569248, 3140192, 3532716, 7065432, 14130864, 28261728

72 divisors

τ Total Divisors 72
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28261727
Sum of the proper positive divisors of n
A Arithmetic Mean 0.013888888888889
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 72
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28261728 can be divided by 72 positive divisors. The sum of these divisors (counting 28261728) is 1, the average is 0.013888888888889.

Base conversion 28261728

Base System Value
2 Binary 1101011110011110101100000
3 Ternary 1222011211210200
4 Quaternary 1223303311200
5 Quinary 24213333403
6 Senary 2445425200
8 Octal 153636540
10 Decimal 28261728
12 Duodecimal 956b200
16 Hexadecimal 1af3d60
20 Vigesimal 8gce68
36 Base36 gtqw0

Cryptographic Hash Functions

md5 0cacc0eadba63c45dbd0725a70a17f36
sha1 9e040a96bdc987e6c220b4917a322d8ff221e9df
sha256 adfb8bffdf46a0f99655896122f8739ed548308847ea2d5d69664ea28cf9a42d
sha512 fba47ea927e33d38e978484a1553448ae342e2c392784d4a7380e049660f24612aa8e9930da09ced1a08017ae9ff1f84aa83dfbdb2f3012663ffe74dd2609aeb
ripemd-160 65177cc69d8cf34271db91a1d8c400c43858090d

28261728 as geometric shapes

Circle

Radius = n
Diameter 56523456
Circumference 177573674.12511
Area 2.5092694390422E+15

Sphere

Radius = n
Volume 9.4555053819897E+22
Surface area 1.0037077756169E+16
Circumference 177573674.12511

Square

Length = n
Perimeter 113046912
Area 798725269545984
Diagonal 39968119.033699

Cube

Length = n
Surface area 4792351617275904
Volume 2.2573356314635E+22
Space diagonal 48950748.805692

Equilateral Triangle

Length = n
Perimeter 84785184
Area 3.458581870357E+14
Altitude 24475374.402846

Triangular Pyramid

Length = n
Surface area 3.458581870357E+14
Volume 2.6602955540365E+21
Height 13322706.344566