81723489 (number)

81723489 is an odd 8-digits composite number following 81723488 and preceding 81723490. In scientific notation, it is written as 8.1723489 × 10^7. The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors. There are 54455856 positive integers (up to 81723489) that are relatively prime to 81723489.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred twenty-three thousand four hundred eighty-nine

Notation

Scientific notation 8.1723489 × 10^7
Engineering notation 8.1723489 × 10^6

Prime Factorization of 81723489

Prime Factorization 3 × 10687 × 2549

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81723489
Product of the distinct prime numbers

The prime factorization of 81723489 is 3 × 10687 × 2549. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81723489)

Multiplication

n×y
n×2 163446978
n×3 245170467
n×4 326893956
n×5 408617445

Division

n÷y
n÷2 40861744.5
n÷3 27241163
n÷3 20430872.25
n÷5 16344697.8

Exponentiation

ny
n2 6678728654333121
n3 5.4580900771638E+23
n4 4.460541643821E+31
n5 3.6453102596285E+39

Nth Root

y√n
2√n 9040.1044794847
3√n 433.95926656575
4√n 95.07946402607
5√n 38.235729447315

Divisors of 81723489

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81723488
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81723489 can be divided by 8 positive divisors. The sum of these divisors (counting 81723489) is 1, the average is 0.125.

Base conversion 81723489

Base System Value
2 Binary 100110111110000000001100001
3 Ternary 12200202222112220
4 Quaternary 10313300001201
5 Quinary 131410122424
6 Senary 12035341253
8 Octal 467600141
10 Decimal 81723489
12 Duodecimal 23451829
16 Hexadecimal 4df0061
20 Vigesimal 15af8e9
36 Base36 1cnm8x

Cryptographic Hash Functions

md5 097689fd42416fab6c843fe5b76d505e
sha1 e0826f32a83e1ee0f4316bfaea3638d1a4e239e2
sha256 aae09e4985b61aff995fb317f5d51035bd7f46d124cb78d72c96d18bfa8c3391
sha512 3d3aff25b1e6ec0f7a29a046b0973f7763daa14434ed39b285a1a6fda757a84f35f8a0e6934ca81f5aeb28b7c197a50bb3a10226eafec9af97acf3678c13b322
ripemd-160 c85a9260c878735abf81bd24df6e3ee368818c98

81723489 as geometric shapes

Circle

Radius = n
Diameter 163446978
Circumference 513483825.33625
Area 2.0981844875773E+16

Sphere

Radius = n
Volume 2.2862794252065E+24
Surface area 8.392737950309E+16
Circumference 513483825.33625

Square

Length = n
Perimeter 326893956
Area 6678728654333121
Diagonal 115574466.50825

Cube

Length = n
Surface area 40072371925998726
Volume 5.4580900771638E+23
Space diagonal 141549235.1198

Equilateral Triangle

Length = n
Perimeter 245170467
Area 2.8919743398178E+15
Altitude 70774617.559898

Triangular Pyramid

Length = n
Surface area 2.8919743398178E+15
Volume 6.4324208431492E+22
Height 38524822.169416