81330805 (number)

81330805 is an odd 8-digits composite number following 81330804 and preceding 81330806. In scientific notation, it is written as 8.1330805 × 10^7. The sum of its digits is 28. It has a total of 4 prime factors and 16 positive divisors. There are 60992512 positive integers (up to 81330805) that are relatively prime to 81330805.

Interesting facts

Basic properties

Name

Name eighty-one million three hundred thirty thousand eight hundred five

Notation

Scientific notation 8.1330805 × 10^7
Engineering notation 8.1330805 × 10^6

Prime Factorization of 81330805

Prime Factorization 5 × 17 × 269 × 3557

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81330805
Product of the distinct prime numbers

The prime factorization of 81330805 is 5 × 17 × 269 × 3557. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 1, 26, 36, 896, 211, 6306, 7234, 1027, 42725, 156425, 972706, 4561762, 7821192, 25370061, 75275701, 371889067, 91567006, 3489785414, 7527519162

Basic calculations (n = 81330805)

Multiplication

n×y
n×2 162661610
n×3 243992415
n×4 325323220
n×5 406654025

Division

n÷y
n÷2 40665402.5
n÷3 27110268.333333
n÷3 20332701.25
n÷5 16266161

Exponentiation

ny
n2 6614699841948025
n3 5.3797886297901E+23
n4 4.3754253999067E+31
n5 3.5585686999186E+39

Nth Root

y√n
2√n 9018.3593297229
3√n 433.26308756144
4√n 94.965042672148
5√n 38.198913836474

Divisors of 81330805

1, 5, 17, 85, 269, 1345, 3557, 4573, 17785, 22865, 60469, 302345, 956833, 4784165, 16266161, 81330805

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 -81330804
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 81330805 can be divided by 16 positive divisors. The sum of these divisors (counting 81330805) is 1, the average is 0.0625.

Base conversion 81330805

Base System Value
2 Binary 100110110010000001001110101
3 Ternary 12200001000220001
4 Quaternary 10312100021311
5 Quinary 131310041210
6 Senary 12023111301
8 Octal 466201165
10 Decimal 81330805
12 Duodecimal 232a2531
16 Hexadecimal 4d90275
20 Vigesimal 1586705
36 Base36 1cf791

Cryptographic Hash Functions

md5 eb16b9cfc63d483a66e5342ed0b911ff
sha1 ebe512e44965dbbc1c2915d63a9b93fcdb799ae0
sha256 f77ff569078da2b308c6154a8b7aad3f092e48454a6509ad654196276786d547
sha512 e922fdab07ad39bcdc2216fb91389ef785572d2d883baaef7f5fb17cfc14fb56716e12ef789361dcc0328c94b66fbfb0c613b283b409f05c87b420cc8a3a5fe0
ripemd-160 2dfd7be6d2294f27a851537f65886725b9d26e96

81330805 as geometric shapes

Circle

Radius = n
Diameter 162661610
Circumference 511016518.99709
Area 2.0780692429165E+16

Sphere

Radius = n
Volume 2.2534805916286E+24
Surface area 8.3122769716662E+16
Circumference 511016518.99709

Square

Length = n
Perimeter 325323220
Area 6614699841948025
Diagonal 115019127.46972

Cube

Length = n
Surface area 39688199051688150
Volume 5.3797886297901E+23
Space diagonal 140869086.48048

Equilateral Triangle

Length = n
Perimeter 243992415
Area 2.864249050768E+15
Altitude 70434543.240238

Triangular Pyramid

Length = n
Surface area 2.864249050768E+15
Volume 6.3401417024581E+22
Height 38339709.156574