81728260 (number)

81728260 is an even 8-digits composite number following 81728259 and preceding 81728261. In scientific notation, it is written as 8.1728260 × 10^7. The sum of its digits is 34. It has a total of 4 prime factors and 12 positive divisors. There are 32691296 positive integers (up to 81728260) that are relatively prime to 81728260.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1728260 × 10^7
Engineering notation 8.1728260 × 10^6

Prime Factorization of 81728260

Prime Factorization 2 × 2 × 5 × 4086413

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40864130
Product of the distinct prime numbers

The prime factorization of 81728260 is 2 × 2 × 5 × 4086413. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 5, 95, 9, 410, 489, 5670, 9566, 27727, 77803, 201248, 897095, 884789, 9675567, 14518114, 57939734, 5609318, 66332997, 4039538254, 9784747927

Basic calculations (n = 81728260)

Multiplication

n×y
n×2 163456520
n×3 245184780
n×4 326913040
n×5 408641300

Division

n÷y
n÷2 40864130
n÷3 27242753.333333
n÷3 20432065
n÷5 16345652

Exponentiation

ny
n2 6679508482627600
n3 5.4590460594039E+23
n4 4.4615833569494E+31
n5 3.6463744460843E+39

Nth Root

y√n
2√n 9040.3683553271
3√n 433.96771121814
4√n 95.080851675441
5√n 38.23617587565

Divisors of 81728260

1, 2, 4, 5, 10, 20, 4086413, 8172826, 16345652, 20432065, 40864130, 81728260

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81728259
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81728260 can be divided by 12 positive divisors. The sum of these divisors (counting 81728260) is 1, the average is 0.083333333333333.

Base conversion 81728260

Base System Value
2 Binary 100110111110001001100000100
3 Ternary 12200210020002121
4 Quaternary 10313301030010
5 Quinary 131410301020
6 Senary 12035415324
8 Octal 467611404
10 Decimal 81728260
12 Duodecimal 23454544
16 Hexadecimal 4df1304
20 Vigesimal 15ag0d0
36 Base36 1cnpxg

Cryptographic Hash Functions

md5 ab1def060e8018e04762e7f4602ef619
sha1 eddf3a1f58d0c4c6ca831b90aa6739b42f282dd9
sha256 ec22a2fdd8e58340b85c2f541a01c6d179f00e635b01b7d2c0c836eb79c7273f
sha512 77f9b51bc765f2b1cbc3160ffdadeeff72b0b5a8b062736b477d8968ff92d716ff946987dbccb9affc689e12cabb8552d48ad032fc4a42c2ca258165cce622ad
ripemd-160 a066cb650161265bd6a431bd87b3e30103546de7

81728260 as geometric shapes

Circle

Radius = n
Diameter 163456520
Circumference 513513802.41335
Area 2.0984294778614E+16

Sphere

Radius = n
Volume 2.2866798661109E+24
Surface area 8.3937179114454E+16
Circumference 513513802.41335

Square

Length = n
Perimeter 326913040
Area 6679508482627600
Diagonal 115581213.72115

Cube

Length = n
Surface area 40077050895765600
Volume 5.4590460594039E+23
Space diagonal 141557498.7342

Equilateral Triangle

Length = n
Perimeter 245184780
Area 2.8923120153746E+15
Altitude 70778749.3671

Triangular Pyramid

Length = n
Surface area 2.8923120153746E+15
Volume 6.4335474790237E+22
Height 38527071.240385