81208712 (number)

81208712 is an even 8-digits composite number following 81208711 and preceding 81208713. In scientific notation, it is written as 8.1208712 × 10^7. The sum of its digits is 29. It has a total of 5 prime factors and 16 positive divisors. There are 37480896 positive integers (up to 81208712) that are relatively prime to 81208712.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred eight thousand seven hundred twelve

Notation

Scientific notation 8.1208712 × 10^7
Engineering notation 8.1208712 × 10^6

Prime Factorization of 81208712

Prime Factorization 2 × 2 × 2 × 13 × 780853

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20302178
Product of the distinct prime numbers

The prime factorization of 81208712 is 2 × 2 × 2 × 13 × 780853. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 9, 71, 18, 801, 841, 5439, 4885, 3480, 23351, 57980, 334653, 5602935, 6928032, 45811973, 95810007, 236106016, 105037969, 9792567720, 8195621755

Basic calculations (n = 81208712)

Multiplication

n×y
n×2 162417424
n×3 243626136
n×4 324834848
n×5 406043560

Division

n÷y
n÷2 40604356
n÷3 27069570.666667
n÷3 20302178
n÷5 16241742.4

Exponentiation

ny
n2 6594854904698944
n3 5.3555967263748E+23
n4 4.3492111214032E+31
n5 3.5319383338523E+39

Nth Root

y√n
2√n 9011.587651463
3√n 433.04617556265
4√n 94.929382445389
5√n 38.187438177222

Divisors of 81208712

1, 2, 4, 8, 13, 26, 52, 104, 780853, 1561706, 3123412, 6246824, 10151089, 20302178, 40604356, 81208712

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 -81208711
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 81208712 can be divided by 16 positive divisors. The sum of these divisors (counting 81208712) is 1, the average is 0.0625.

Base conversion 81208712

Base System Value
2 Binary 100110101110010010110001000
3 Ternary 12122210211102002
4 Quaternary 10311302112020
5 Quinary 131242134322
6 Senary 12020330132
8 Octal 465622610
10 Decimal 81208712
12 Duodecimal 23243948
16 Hexadecimal 4d72588
20 Vigesimal 157b1fc
36 Base36 1ccl1k

Cryptographic Hash Functions

md5 3f9cb5f303e8e511ca6f0b8cbb8e51b9
sha1 e2f07eef22c5bc9239c8c2ae036aa606665a45d2
sha256 5796a118b9da7690792a416a1cbe9e34b525f61f35f9bda39ff868c812035e8d
sha512 aa23ff57b8a40ba8dcd81b74ea63db15e2d687ac9183f06c89a1aba09ef28d703e98bd32f4e739c263502c2791c2215515010d24a80e0bfbca53d2f517385299
ripemd-160 6918314d788b4a199ff28ca5481049b93c5fab56

81208712 as geometric shapes

Circle

Radius = n
Diameter 162417424
Circumference 510249386.05338
Area 2.0718347720093E+16

Sphere

Radius = n
Volume 2.2433471108225E+24
Surface area 8.2873390880371E+16
Circumference 510249386.05338

Square

Length = n
Perimeter 324834848
Area 6594854904698944
Diagonal 114846461.89325

Cube

Length = n
Surface area 39569129428193664
Volume 5.3555967263748E+23
Space diagonal 140657615.20123

Equilateral Triangle

Length = n
Perimeter 243626136
Area 2.8556559408708E+15
Altitude 70328807.600614

Triangular Pyramid

Length = n
Surface area 2.8556559408708E+15
Volume 6.3116312708669E+22
Height 38282153.964417