81159894 (number)

81159894 is an even 8-digits composite number following 81159893 and preceding 81159895. In scientific notation, it is written as 8.1159894 × 10^7. The sum of its digits is 45. It has a total of 5 prime factors and 32 positive divisors. There are 26872560 positive integers (up to 81159894) that are relatively prime to 81159894.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred fifty-nine thousand eight hundred ninety-four

Notation

Scientific notation 8.1159894 × 10^7
Engineering notation 8.1159894 × 10^6

Prime Factorization of 81159894

Prime Factorization 2 × 3 × 27 × 157 × 3191

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 81159894
Product of the distinct prime numbers

The prime factorization of 81159894 is 2 × 3 × 27 × 157 × 3191. Since it has a total of 5 prime factors.

Most popular turbo-numbers

8, 9, 63, 71, 289, 616, 2510, 9888, 25565, 46980, 109731, 276445, 3804118, 9961175, 98513698, 33126862, 337305330, 335462020, 3683619525, 4517652351

Basic calculations (n = 81159894)

Multiplication

n×y
n×2 162319788
n×3 243479682
n×4 324639576
n×5 405799470

Division

n÷y
n÷2 40579947
n÷3 27053298
n÷3 20289973.5
n÷5 16231978.8

Exponentiation

ny
n2 6586928394091236
n3 5.3459441025003E+23
n4 4.3387625668885E+31
n5 3.5213351001984E+39

Nth Root

y√n
2√n 9008.8786205609
3√n 432.95938402993
4√n 94.915112708994
5√n 38.182845855189

Divisors of 81159894

1, 2, 3, 6, 27, 54, 81, 157, 162, 314, 471, 942, 3191, 4239, 6382, 8478, 9573, 12717, 19146, 25434, 86157, 172314, 258471, 500987, 516942, 1001974, 1502961, 3005922, 13526649, 27053298, 40579947, 81159894

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81159893
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81159894 can be divided by 32 positive divisors. The sum of these divisors (counting 81159894) is 1, the average is 0.03125.

Base conversion 81159894

Base System Value
2 Binary 100110101100110011011010110
3 Ternary 12122201100110000
4 Quaternary 10311212123112
5 Quinary 131234104034
6 Senary 12015312130
8 Octal 465463326
10 Decimal 81159894
12 Duodecimal 2321b646
16 Hexadecimal 4d666d6
20 Vigesimal 1574jee
36 Base36 1cbjdi

Cryptographic Hash Functions

md5 70ddb054546026fea0f6ca2ac0ee2f9b
sha1 41634dd34aae6094d279612edee9e5dff5a42b62
sha256 8974d59275d70a8c4f28f99f1333a38834757f44896ed94922007602075df09b
sha512 1ed6b91bc043d3b5356d8e23aa7e6c0a46391a740b22823be54adbba046c2f632cf20400c15f498e5a511c0c69c17c24d0f80391229f7e368fffeb425cec579c
ripemd-160 a43015bff9768c0b8466326a441a4902aea036c1

81159894 as geometric shapes

Circle

Radius = n
Diameter 162319788
Circumference 509942653.51305
Area 2.0693445852599E+16

Sphere

Radius = n
Volume 2.2393038291889E+24
Surface area 8.2773783410396E+16
Circumference 509942653.51305

Square

Length = n
Perimeter 324639576
Area 6586928394091236
Diagonal 114777422.81556

Cube

Length = n
Surface area 39521570364547416
Volume 5.3459441025003E+23
Space diagonal 140573059.9449

Equilateral Triangle

Length = n
Perimeter 243479682
Area 2.852223661096E+15
Altitude 70286529.972452

Triangular Pyramid

Length = n
Surface area 2.852223661096E+15
Volume 6.300255544537E+22
Height 38259140.938521