81755765 (number)

81755765 is an odd 8-digits composite number following 81755764 and preceding 81755766. In scientific notation, it is written as 8.1755765 × 10^7. The sum of its digits is 44. It has a total of 6 prime factors and 64 positive divisors. There are 48771072 positive integers (up to 81755765) that are relatively prime to 81755765.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred fifty-five thousand seven hundred sixty-five

Notation

Scientific notation 8.1755765 × 10^7
Engineering notation 8.1755765 × 10^6

Prime Factorization of 81755765

Prime Factorization 13 × 5 × 49 × 7 × 19 × 193

Composite number
ω Distinct Factors 6
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 81755765
Product of the distinct prime numbers

The prime factorization of 81755765 is 13 × 5 × 49 × 7 × 19 × 193. Since it has a total of 6 prime factors.

Most popular turbo-numbers

6, 1, 13, 87, 728, 464, 5040, 9853, 68718, 73777, 545760, 409981, 9348455, 4397128, 28175339, 61430256, 655381121, 419960316, 1226606502, 9825730375

Basic calculations (n = 81755765)

Multiplication

n×y
n×2 163511530
n×3 245267295
n×4 327023060
n×5 408778825

Division

n÷y
n÷2 40877882.5
n÷3 27251921.666667
n÷3 20438941.25
n÷5 16351153

Exponentiation

ny
n2 6684005110735225
n3 5.4645595109207E+23
n4 4.4675924320335E+31
n5 3.6525143698911E+39

Nth Root

y√n
2√n 9041.8894596207
3√n 434.01638855907
4√n 95.088850343354
5√n 38.238749145829

Divisors of 81755765

1, 5, 7, 13, 19, 35, 49, 65, 91, 95, 133, 193, 245, 247, 343, 455, 637, 665, 931, 965, 1235, 1351, 1715, 1729, 2509, 3185, 3667, 4459, 4655, 6517, 6755, 8645, 9457, 12103, 12545, 17563, 18335, 22295, 25669, 32585, 47285, 47671, 60515, 66199, 84721, 87815, 122941, 128345, 179683, 238355, 330995, 333697, 423605, 614705, 860587, 898415, 1257781, 1668485, 2335879, 4302935, 6288905, 11679395, 16351153, 81755765

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81755764
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81755765 can be divided by 64 positive divisors. The sum of these divisors (counting 81755765) is 1, the average is 0.015625.

Base conversion 81755765

Base System Value
2 Binary 100110111110111111001110101
3 Ternary 12200211121211022
4 Quaternary 10313313321311
5 Quinary 131412141030
6 Senary 12040150525
8 Octal 467677165
10 Decimal 81755765
12 Duodecimal 23468445
16 Hexadecimal 4df7e75
20 Vigesimal 15aj985
36 Base36 1cob5h

Cryptographic Hash Functions

md5 965dc6fd66709de3e1a1711c905465cb
sha1 181dde3edb370add2330595551eaeed0a6eeab77
sha256 baa9f5301f4f5a392d2fd5980a8168bb433b1a868f2b237faccc5d0c6a6d6c9e
sha512 c93403bd805eb61e354ebd96925145985bd12c70bc4f38e8d413e5b70c27c10f582b4cea12e40140765a154e52da96a3248eea33691e5cf547d013c8a99fc7c3
ripemd-160 412560ba80dbe26c0c6ce3242c5ead4da2303e52

81755765 as geometric shapes

Circle

Radius = n
Diameter 163511530
Circumference 513686621.42523
Area 2.0998421352442E+16

Sphere

Radius = n
Volume 2.2889893352817E+24
Surface area 8.399368540977E+16
Circumference 513686621.42523

Square

Length = n
Perimeter 327023060
Area 6684005110735225
Diagonal 115620111.66519

Cube

Length = n
Surface area 40104030664411350
Volume 5.4645595109207E+23
Space diagonal 141605138.79166

Equilateral Triangle

Length = n
Perimeter 245267295
Area 2.8942591124609E+15
Altitude 70802569.395831

Triangular Pyramid

Length = n
Surface area 2.8942591124609E+15
Volume 6.4400451439491E+22
Height 38540037.221729