81289360 (number)

81289360 is an even 8-digits composite number following 81289359 and preceding 81289361. In scientific notation, it is written as 8.1289360 × 10^7. The sum of its digits is 37. It has a total of 7 prime factors and 40 positive divisors. There are 31101312 positive integers (up to 81289360) that are relatively prime to 81289360.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred eighty-nine thousand three hundred sixty

Notation

Scientific notation 8.1289360 × 10^7
Engineering notation 8.1289360 × 10^6

Prime Factorization of 81289360

Prime Factorization 2 × 2 × 2 × 2 × 23 × 5 × 44179

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10161170
Product of the distinct prime numbers

The prime factorization of 81289360 is 2 × 2 × 2 × 2 × 23 × 5 × 44179. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81289360)

Multiplication

n×y
n×2 162578720
n×3 243868080
n×4 325157440
n×5 406446800

Division

n÷y
n÷2 40644680
n÷3 27096453.333333
n÷3 20322340
n÷5 16257872

Exponentiation

ny
n2 6607960049209600
n3 5.3715684330582E+23
n4 4.366513601195E+31
n5 3.5495109607244E+39

Nth Root

y√n
2√n 9016.0612242819
3√n 433.18948019268
4√n 94.95294215706
5√n 38.195019920058

Divisors of 81289360

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81289359
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81289360 can be divided by 40 positive divisors. The sum of these divisors (counting 81289360) is 1, the average is 0.025.

Base conversion 81289360

Base System Value
2 Binary 100110110000110000010010000
3 Ternary 12122221221001001
4 Quaternary 10312012002100
5 Quinary 131302224420
6 Senary 12022151344
8 Octal 466060220
10 Decimal 81289360
12 Duodecimal 23282554
16 Hexadecimal 4d86090
20 Vigesimal 1581380
36 Base36 1ceb9s

Cryptographic Hash Functions

md5 c34cd44e1a5784054fdce01727fac558
sha1 303e78897fc6f2ba8a3a9130129fe490d597804d
sha256 a704c6a4e45eaabdc48cae367941bd5a482676e4bba4cdefa2de608a8c420000
sha512 4bf8702858ad6748d5efa22f4bcbfea61a86bdaaea818899ce22f82543c9fc2d8375d5c6f04a84a48fb0e52b3c0dad812f86619be9fd41cfc48077bd96484a2a
ripemd-160 cee45206d3dbcc3b739a42b837b83b60f10f816c

81289360 as geometric shapes

Circle

Radius = n
Diameter 162578720
Circumference 510756112.38203
Area 2.0759518745812E+16

Sphere

Radius = n
Volume 2.2500373236734E+24
Surface area 8.3038074983247E+16
Circumference 510756112.38203

Square

Length = n
Perimeter 325157440
Area 6607960049209600
Diagonal 114960515.38863

Cube

Length = n
Surface area 39647760295257600
Volume 5.3715684330582E+23
Space diagonal 140797301.63476

Equilateral Triangle

Length = n
Perimeter 243868080
Area 2.8613306349041E+15
Altitude 70398650.817379

Triangular Pyramid

Length = n
Surface area 2.8613306349041E+15
Volume 6.330454107705E+22
Height 38320171.79621