81489265 (number)

81489265 is an odd 8-digits composite number following 81489264 and preceding 81489266. In scientific notation, it is written as 8.1489265 × 10^7. The sum of its digits is 43. It has a total of 5 prime factors and 24 positive divisors. There are 54637440 positive integers (up to 81489265) that are relatively prime to 81489265.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred eighty-nine thousand two hundred sixty-five

Notation

Scientific notation 8.1489265 × 10^7
Engineering notation 8.1489265 × 10^6

Prime Factorization of 81489265

Prime Factorization 5 × 13 × 13 × 121 × 797

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 6268405
Product of the distinct prime numbers

The prime factorization of 81489265 is 5 × 13 × 13 × 121 × 797. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 5, 22, 30, 325, 221, 8441, 8185, 92459, 91539, 832793, 800375, 815855, 2251517, 70090581, 57643277, 989483760, 844618395, 9582646623, 7496803804

Basic calculations (n = 81489265)

Multiplication

n×y
n×2 162978530
n×3 244467795
n×4 325957060
n×5 407446325

Division

n÷y
n÷2 40744632.5
n÷3 27163088.333333
n÷3 20372316.25
n÷5 16297853

Exponentiation

ny
n2 6640500310240225
n3 5.4112948951375E+23
n4 4.4096244370301E+31
n5 3.5933705429962E+39

Nth Root

y√n
2√n 9027.1404663936
3√n 433.54428617737
4√n 95.011264944708
5√n 38.213787138354

Divisors of 81489265

1, 5, 13, 65, 121, 169, 605, 797, 845, 1573, 3985, 7865, 10361, 20449, 51805, 96437, 102245, 134693, 482185, 673465, 1253681, 6268405, 16297853, 81489265

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 -81489264
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 81489265 can be divided by 24 positive divisors. The sum of these divisors (counting 81489265) is 1, the average is 0.041666666666667.

Base conversion 81489265

Base System Value
2 Binary 100110110110110110101110001
3 Ternary 12200100002020221
4 Quaternary 10312312311301
5 Quinary 131330124030
6 Senary 12030333041
8 Octal 466666561
10 Decimal 81489265
12 Duodecimal 2335a181
16 Hexadecimal 4db6d71
20 Vigesimal 1596335
36 Base36 1cilip

Cryptographic Hash Functions

md5 74855e85d5db29877db83d87b9025d0d
sha1 b7327913cfc9f20b0f428a82d1838f99336494d5
sha256 209a4f4fcd91ff4b6c03a3064c9d680a6a97bc5c1dd3cba31faf50c95697f564
sha512 56ef1089c0f0d3988e7fc4098e77a438db654309ae61ff9f8c3fb34f89f8c16f1fdd50d0c865e4ecb64d2b1c081e90ae28a586271c77477b2990c4967758ab34
ripemd-160 7d8d637209ed74a8542373d9c2d241c46c6abc71

81489265 as geometric shapes

Circle

Radius = n
Diameter 162978530
Circumference 512012152.54086
Area 2.0861746990811E+16

Sphere

Radius = n
Volume 2.2666779051962E+24
Surface area 8.3446987963246E+16
Circumference 512012152.54086

Square

Length = n
Perimeter 325957060
Area 6640500310240225
Diagonal 115243223.75082

Cube

Length = n
Surface area 39843001861441350
Volume 5.4112948951375E+23
Space diagonal 141143547.25144

Equilateral Triangle

Length = n
Perimeter 244467795
Area 2.8754209812532E+15
Altitude 70571773.625722

Triangular Pyramid

Length = n
Surface area 2.8754209812532E+15
Volume 6.3772721922531E+22
Height 38414407.916938