81749140 (number)

81749140 is an even 8-digits composite number following 81749139 and preceding 81749141. In scientific notation, it is written as 8.1749140 × 10^7. The sum of its digits is 34. It has a total of 5 prime factors and 24 positive divisors. There are 29726880 positive integers (up to 81749140) that are relatively prime to 81749140.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred forty-nine thousand one hundred forty

Notation

Scientific notation 8.1749140 × 10^7
Engineering notation 8.1749140 × 10^6

Prime Factorization of 81749140

Prime Factorization 2 × 2 × 5 × 11 × 371587

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40874570
Product of the distinct prime numbers

The prime factorization of 81749140 is 2 × 2 × 5 × 11 × 371587. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 4, 91, 29, 562, 67, 6611, 4840, 57970, 89556, 176462, 153060, 7628706, 2150964, 46095394, 52863177, 844835252, 810982319, 9843826051, 2260899555

Basic calculations (n = 81749140)

Multiplication

n×y
n×2 163498280
n×3 245247420
n×4 326996560
n×5 408745700

Division

n÷y
n÷2 40874570
n÷3 27249713.333333
n÷3 20437285
n÷5 16349828

Exponentiation

ny
n2 6682921890739600
n3 5.4632311725514E+23
n4 4.4661444997727E+31
n5 3.6510347197214E+39

Nth Root

y√n
2√n 9041.5231017788
3√n 434.00466487514
4√n 95.086923926368
5√n 38.238129397669

Divisors of 81749140

1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 371587, 743174, 1486348, 1857935, 3715870, 4087457, 7431740, 8174914, 16349828, 20437285, 40874570, 81749140

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81749139
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81749140 can be divided by 24 positive divisors. The sum of these divisors (counting 81749140) is 1, the average is 0.041666666666667.

Base conversion 81749140

Base System Value
2 Binary 100110111110110010010010100
3 Ternary 12200211021201221
4 Quaternary 10313312102110
5 Quinary 131411433030
6 Senary 12040100124
8 Octal 467662224
10 Decimal 81749140
12 Duodecimal 23464644
16 Hexadecimal 4df6494
20 Vigesimal 15aich0
36 Base36 1co61g

Cryptographic Hash Functions

md5 83674dec2f242948b91c80e01256724f
sha1 bb1ac9b03de3bf8530475fb1fb5fcbe818ec2077
sha256 2b8feae993935ac04ba09b66d9df1ebbcc1e509061f3677dbe82bc78a93aa64e
sha512 385f64b35906d8abbd8a0e3a9dc0d4eb6605240db649bcde8a1845185dc23e8f4de97366bb9df9b36c0de96d38acb998bc178c1ef61f2a50f8caa453039fb4fa
ripemd-160 fda98582a36c7f44bc1d4dda3da6acc785f15782

81749140 as geometric shapes

Circle

Radius = n
Diameter 163498280
Circumference 513644995.32257
Area 2.0995018316462E+16

Sphere

Radius = n
Volume 2.2884329222067E+24
Surface area 8.3980073265848E+16
Circumference 513644995.32257

Square

Length = n
Perimeter 326996560
Area 6682921890739600
Diagonal 115610742.50034

Cube

Length = n
Surface area 40097531344437600
Volume 5.4632311725514E+23
Space diagonal 141593663.95506

Equilateral Triangle

Length = n
Perimeter 245247420
Area 2.8937900644438E+15
Altitude 70796831.977531

Triangular Pyramid

Length = n
Surface area 2.8937900644438E+15
Volume 6.438479682168E+22
Height 38536914.166779