81581346 (number)

81581346 is an even 8-digits composite number following 81581345 and preceding 81581347. In scientific notation, it is written as 8.1581346 × 10^7. The sum of its digits is 36. It has a total of 7 prime factors and 72 positive divisors. There are 21186000 positive integers (up to 81581346) that are relatively prime to 81581346.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred eighty-one thousand three hundred forty-six

Notation

Scientific notation 8.1581346 × 10^7
Engineering notation 8.1581346 × 10^6

Prime Factorization of 81581346

Prime Factorization 2 × 3 × 3 × 11 × 7 × 11 × 5351

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2472162
Product of the distinct prime numbers

The prime factorization of 81581346 is 2 × 3 × 3 × 11 × 7 × 11 × 5351. Since it has a total of 7 prime factors.

Most popular turbo-numbers

1, 3, 12, 51, 413, 635, 1132, 4971, 28147, 67473, 948761, 707882, 8315115, 5665196, 45355174, 300462, 895793223, 567199924, 7006606398, 8426251926

Basic calculations (n = 81581346)

Multiplication

n×y
n×2 163162692
n×3 244744038
n×4 326325384
n×5 407906730

Division

n÷y
n÷2 40790673
n÷3 27193782
n÷3 20395336.5
n÷5 16316269.2

Exponentiation

ny
n2 6655516015171716
n3 5.4296595484226E+23
n4 4.4295893428207E+31
n5 3.6137186081457E+39

Nth Root

y√n
2√n 9032.2392572385
3√n 433.70752307396
4√n 95.038093716354
5√n 38.222419378102

Divisors of 81581346

1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 33, 42, 63, 66, 77, 99, 121, 126, 154, 198, 231, 242, 363, 462, 693, 726, 847, 1089, 1386, 1694, 2178, 2541, 5082, 5351, 7623, 10702, 15246, 16053, 32106, 37457, 48159, 58861, 74914, 96318, 112371, 117722, 176583, 224742, 337113, 353166, 412027, 529749, 647471, 674226, 824054, 1059498, 1236081, 1294942, 1942413, 2472162, 3708243, 3884826, 4532297, 5827239, 7416486, 9064594, 11654478, 13596891, 27193782, 40790673, 81581346

72 divisors

τ Total Divisors 72
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81581345
Sum of the proper positive divisors of n
A Arithmetic Mean 0.013888888888889
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 72
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81581346 can be divided by 72 positive divisors. The sum of these divisors (counting 81581346) is 1, the average is 0.013888888888889.

Base conversion 81581346

Base System Value
2 Binary 100110111001101010100100010
3 Ternary 12200111202120100
4 Quaternary 10313031110202
5 Quinary 131341100341
6 Senary 12032323230
8 Octal 467152442
10 Decimal 81581346
12 Duodecimal 233a3516
16 Hexadecimal 4dcd522
20 Vigesimal 159hd76
36 Base36 1ckkki

Cryptographic Hash Functions

md5 1b78f597fe143006529780722ee030b7
sha1 208c3a9bc76dcba48be7ce071a6f51b4ca780a7f
sha256 9aa04796ba537525a43611b1761e809bb99156cf1bc03c4023b973e938b28698
sha512 90cb1da979b81d6b3b403dbc06b51b5e3786dc31bcf2789db78616d2aee6efb6a960452c6de150a062bf6a78f5089f6808f683745cacd20497e7276bcd7c8c9b
ripemd-160 2740be6741e82089057614454b2afcb57492fabd

81581346 as geometric shapes

Circle

Radius = n
Diameter 163162692
Circumference 512590714.52713
Area 2.0908920219113E+16

Sphere

Radius = n
Volume 2.2743704731758E+24
Surface area 8.3635680876451E+16
Circumference 512590714.52713

Square

Length = n
Perimeter 326325384
Area 6655516015171716
Diagonal 115373445.94985

Cube

Length = n
Surface area 39933096091030296
Volume 5.4296595484226E+23
Space diagonal 141303036.22186

Equilateral Triangle

Length = n
Perimeter 244744038
Area 2.8819229722164E+15
Altitude 70651518.110928

Triangular Pyramid

Length = n
Surface area 2.8819229722164E+15
Volume 6.3989151437066E+22
Height 38457815.316617