81445812 (number)

81445812 is an even 8-digits composite number following 81445811 and preceding 81445813. In scientific notation, it is written as 8.1445812 × 10^7. The sum of its digits is 33. It has a total of 4 prime factors and 12 positive divisors. There are 23270208 positive integers (up to 81445812) that are relatively prime to 81445812.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-five thousand eight hundred twelve

Notation

Scientific notation 8.1445812 × 10^7
Engineering notation 8.1445812 × 10^6

Prime Factorization of 81445812

Prime Factorization 2 × 2 × 21 × 969593

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 40722906
Product of the distinct prime numbers

The prime factorization of 81445812 is 2 × 2 × 21 × 969593. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 1, 60, 30, 369, 512, 2964, 6354, 63432, 28446, 13373, 358707, 6904960, 164651, 83790440, 2158723, 446893695, 57438679, 3595372709, 8535769703

Basic calculations (n = 81445812)

Multiplication

n×y
n×2 162891624
n×3 244337436
n×4 325783248
n×5 407229060

Division

n÷y
n÷2 40722906
n÷3 27148604
n÷3 20361453
n÷5 16289162.4

Exponentiation

ny
n2 6633420292339344
n3 5.4026430204686E+23
n4 4.4002264774819E+31
n5 3.5838001844242E+39

Nth Root

y√n
2√n 9024.7333478613
3√n 433.46721201974
4√n 94.998596557325
5√n 38.209710876329

Divisors of 81445812

1, 2, 4, 21, 42, 84, 969593, 1939186, 3878372, 20361453, 40722906, 81445812

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81445811
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81445812 can be divided by 12 positive divisors. The sum of these divisors (counting 81445812) is 1, the average is 0.083333333333333.

Base conversion 81445812

Base System Value
2 Binary 100110110101100001110110100
3 Ternary 12200020212122120
4 Quaternary 10312230032310
5 Quinary 131322231222
6 Senary 12025355540
8 Octal 466541664
10 Decimal 81445812
12 Duodecimal 23338bb0
16 Hexadecimal 4dac3b4
20 Vigesimal 1590eac
36 Base36 1chnzo

Cryptographic Hash Functions

md5 37223ee4525c82fdf194689b35099973
sha1 96d2276544f7c7b3f8cb9842cf126aac30f851cc
sha256 3fdc10c000684e3963c53b55e1d3802c454847b3901ff5d0d889b26536c55282
sha512 a8bbcfb6e3c16fbe18dfc8a6eedbba6e25e4c6185339631d5e3e62004eab979f316594733efffebbd09857c7183e622b806691b7a04058c8ebe469751e35bb74
ripemd-160 89059bc529b0b982dc9b748672f2d568aa721a54

81445812 as geometric shapes

Circle

Radius = n
Diameter 162891624
Circumference 511739129.28971
Area 2.0839504458587E+16

Sphere

Radius = n
Volume 2.2630538164096E+24
Surface area 8.3358017834347E+16
Circumference 511739129.28971

Square

Length = n
Perimeter 325783248
Area 6633420292339344
Diagonal 115181771.92889

Cube

Length = n
Surface area 39800521754036064
Volume 5.4026430204686E+23
Space diagonal 141068284.4477

Equilateral Triangle

Length = n
Perimeter 244337436
Area 2.8723552435725E+15
Altitude 70534142.223851

Triangular Pyramid

Length = n
Surface area 2.8723552435725E+15
Volume 6.3670758601725E+22
Height 38393923.976296