81728315 (number)

81728315 is an odd 8-digits composite number following 81728314 and preceding 81728316. In scientific notation, it is written as 8.1728315 × 10^7. The sum of its digits is 35. It has a total of 4 prime factors and 16 positive divisors. There are 62380032 positive integers (up to 81728315) that are relatively prime to 81728315.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred twenty-eight thousand three hundred fifteen

Notation

Scientific notation 8.1728315 × 10^7
Engineering notation 8.1728315 × 10^6

Prime Factorization of 81728315

Prime Factorization 5 × 23 × 569 × 1249

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81728315
Product of the distinct prime numbers

The prime factorization of 81728315 is 5 × 23 × 569 × 1249. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 2, 23, 44, 744, 74, 697, 6731, 95756, 24322, 259497, 607518, 3226820, 8023544, 91338716, 19091954, 149540688, 912280817, 8268356375, 9078981414

Basic calculations (n = 81728315)

Multiplication

n×y
n×2 163456630
n×3 245184945
n×4 326913260
n×5 408641575

Division

n÷y
n÷2 40864157.5
n÷3 27242771.666667
n÷3 20432078.75
n÷5 16345663

Exponentiation

ny
n2 6679517472739225
n3 5.4590570806004E+23
n4 4.4615953668629E+31
n5 3.6463867154551E+39

Nth Root

y√n
2√n 9040.3713972381
3√n 433.96780856602
4√n 95.080867671883
5√n 38.236181021946

Divisors of 81728315

1, 5, 23, 115, 569, 1249, 2845, 6245, 13087, 28727, 65435, 143635, 710681, 3553405, 16345663, 81728315

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 -81728314
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 81728315 can be divided by 16 positive divisors. The sum of these divisors (counting 81728315) is 1, the average is 0.0625.

Base conversion 81728315

Base System Value
2 Binary 100110111110001001100111011
3 Ternary 12200210020011122
4 Quaternary 10313301030323
5 Quinary 131410301230
6 Senary 12035415455
8 Octal 467611473
10 Decimal 81728315
12 Duodecimal 2345458b
16 Hexadecimal 4df133b
20 Vigesimal 15ag0ff
36 Base36 1cnpyz

Cryptographic Hash Functions

md5 6879e212b44382b592780933a65d1cfb
sha1 ddb6d67a32b5e05436496da5abd0e57572178498
sha256 26dcebedebb035b85a683aa7849e84b8beba4f076928983ad13b249ac0ee84af
sha512 a3f16affed835f12cb3a46c5146252c1048f84e7b243f877e3d4a58b891d926fdd0bf925ef9be39dbc5efd774e91527f3a508d084cb813fe97934109308accd3
ripemd-160 dda6e93a63fba65554fef62aa45112659b396d70

81728315 as geometric shapes

Circle

Radius = n
Diameter 163456630
Circumference 513514147.98855
Area 2.0984323021882E+16

Sphere

Radius = n
Volume 2.2866844826589E+24
Surface area 8.3937292087529E+16
Circumference 513514147.98855

Square

Length = n
Perimeter 326913260
Area 6679517472739225
Diagonal 115581291.5029

Cube

Length = n
Surface area 40077104836435350
Volume 5.4590570806004E+23
Space diagonal 141557593.99699

Equilateral Triangle

Length = n
Perimeter 245184945
Area 2.8923159082071E+15
Altitude 70778796.998497

Triangular Pyramid

Length = n
Surface area 2.8923159082071E+15
Volume 6.4335604676282E+22
Height 38527097.167633