81717720 (number)

81717720 is an even 8-digits composite number following 81717719 and preceding 81717721. In scientific notation, it is written as 8.1717720 × 10^7. The sum of its digits is 33. It has a total of 6 prime factors and 32 positive divisors. There are 18678144 positive integers (up to 81717720) that are relatively prime to 81717720.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred seventeen thousand seven hundred twenty

Notation

Scientific notation 8.1717720 × 10^7
Engineering notation 8.1717720 × 10^6

Prime Factorization of 81717720

Prime Factorization 2 × 2 × 2 × 15 × 7 × 97283

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 20429430
Product of the distinct prime numbers

The prime factorization of 81717720 is 2 × 2 × 2 × 15 × 7 × 97283. Since it has a total of 6 prime factors.

Most popular turbo-numbers

10, 6, 67, 90, 332, 593, 6021, 9993, 55190, 3405, 822843, 270552, 2451002, 2697554, 16718291, 24704481, 66757490, 831428976, 5202383910, 3300876204

Basic calculations (n = 81717720)

Multiplication

n×y
n×2 163435440
n×3 245153160
n×4 326870880
n×5 408588600

Division

n÷y
n÷2 40858860
n÷3 27239240
n÷3 20429430
n÷5 16343544

Exponentiation

ny
n2 6677785761998400
n3 5.4569342711897E+23
n4 4.4592822683149E+31
n5 3.6440237980312E+39

Nth Root

y√n
2√n 9039.7853956828
3√n 433.94905501804
4√n 95.077786026405
5√n 38.235189607045

Divisors of 81717720

1, 2, 4, 7, 8, 14, 15, 28, 30, 56, 60, 105, 120, 210, 420, 840, 97283, 194566, 389132, 680981, 778264, 1361962, 1459245, 2723924, 2918490, 5447848, 5836980, 10214715, 11673960, 20429430, 40858860, 81717720

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81717719
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81717720 can be divided by 32 positive divisors. The sum of these divisors (counting 81717720) is 1, the average is 0.03125.

Base conversion 81717720

Base System Value
2 Binary 100110111101110100111011000
3 Ternary 12200202200122020
4 Quaternary 10313232213120
5 Quinary 131404431340
6 Senary 12035254440
8 Octal 467564730
10 Decimal 81717720
12 Duodecimal 2344a420
16 Hexadecimal 4dee9d8
20 Vigesimal 15aee60
36 Base36 1cnhso

Cryptographic Hash Functions

md5 bdcd38989cf909e4507a20adbcc07515
sha1 bc0096d4f0ebdf3ce907139bbb615dc3ac58d3b2
sha256 fea4e0418e6e7195595cb842510c7ccd7897ce7ae136e8d66affed902f044c5f
sha512 e75cf2bebabe6b229275be8b2f01d3f955c751137ae2c71b7f8381649997594541ad2c082461cf230077472041bfc2dace36523b17b23fbfde53d1d39b16ca85
ripemd-160 5e89a28358f15986f914727c7299d03dc54c68e7

81717720 as geometric shapes

Circle

Radius = n
Diameter 163435440
Circumference 513447577.64022
Area 2.0978882692141E+16

Sphere

Radius = n
Volume 2.2857952823323E+24
Surface area 8.3915530768563E+16
Circumference 513447577.64022

Square

Length = n
Perimeter 326870880
Area 6677785761998400
Diagonal 115566307.91021

Cube

Length = n
Surface area 40066714571990400
Volume 5.4569342711897E+23
Space diagonal 141539242.91869

Equilateral Triangle

Length = n
Perimeter 245153160
Area 2.8915660554603E+15
Altitude 70769621.459344

Triangular Pyramid

Length = n
Surface area 2.8915660554603E+15
Volume 6.4310587127459E+22
Height 38522102.636736