81288384 (number)

81288384 is an even 8-digits composite number following 81288383 and preceding 81288385. In scientific notation, it is written as 8.1288384 × 10^7. The sum of its digits is 42. It has a total of 9 prime factors and 56 positive divisors. There are 25668864 positive integers (up to 81288384) that are relatively prime to 81288384.

Interesting facts

Basic properties

Name

Name eighty-one million two hundred eighty-eight thousand three hundred eighty-four

Notation

Scientific notation 8.1288384 × 10^7
Engineering notation 8.1288384 × 10^6

Prime Factorization of 81288384

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 3 × 19 × 22283

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 9
Total number of prime factors
rad Radical 2540262
Product of the distinct prime numbers

The prime factorization of 81288384 is 2 × 2 × 2 × 2 × 2 × 2 × 3 × 19 × 22283. Since it has a total of 9 prime factors.

Most popular turbo-numbers

8, 3, 39, 46, 248, 485, 5494, 3660, 14279, 70645, 397041, 9160, 3435870, 9873171, 5173790, 14679638, 312822593, 957067166, 4617066145, 995087125

Basic calculations (n = 81288384)

Multiplication

n×y
n×2 162576768
n×3 243865152
n×4 325153536
n×5 406441920

Division

n÷y
n÷2 40644192
n÷3 27096128
n÷3 20322096
n÷5 16257676.8

Exponentiation

ny
n2 6607801373331456
n3 5.3713749543109E+23
n4 4.3663038989401E+31
n5 3.5492978799774E+39

Nth Root

y√n
2√n 9016.0070984888
3√n 433.18774649048
4√n 94.952657142856
5√n 38.194928201982

Divisors of 81288384

1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 32, 38, 48, 57, 64, 76, 96, 114, 152, 192, 228, 304, 456, 608, 912, 1216, 1824, 3648, 22283, 44566, 66849, 89132, 133698, 178264, 267396, 356528, 423377, 534792, 713056, 846754, 1069584, 1270131, 1426112, 1693508, 2139168, 2540262, 3387016, 4278336, 5080524, 6774032, 10161048, 13548064, 20322096, 27096128, 40644192, 81288384

56 divisors

τ Total Divisors 56
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81288383
Sum of the proper positive divisors of n
A Arithmetic Mean 0.017857142857143
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 56
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81288384 can be divided by 56 positive divisors. The sum of these divisors (counting 81288384) is 1, the average is 0.017857142857143.

Base conversion 81288384

Base System Value
2 Binary 100110110000101110011000000
3 Ternary 12122221212200220
4 Quaternary 10312011303000
5 Quinary 131302212014
6 Senary 12022143040
8 Octal 466056300
10 Decimal 81288384
12 Duodecimal 23281a80
16 Hexadecimal 4d85cc0
20 Vigesimal 15810j4
36 Base36 1ceaio

Cryptographic Hash Functions

md5 229b222a21f564e3abc0515823853e51
sha1 7baa5ae290d5924a9fc96e0ee699022a059e623a
sha256 25e499e819cec8ff5b9bd51bed1a70e17e7db0c55ccb2ed8a4caf1388e1b0cad
sha512 7b44f011a387f01533ce602527c647e73bae880de50e32a38107c16422df02379d6574ab2137049386a5f53b57e76313a7b962c0de135bf9b89eff8fba22b573
ripemd-160 9f02aab8c0420b0588d73f18a170bd46ff0f84f5

81288384 as geometric shapes

Circle

Radius = n
Diameter 162576768
Circumference 510749979.99317
Area 2.0759020250839E+16

Sphere

Radius = n
Volume 2.2499562794853E+24
Surface area 8.3036081003355E+16
Circumference 510749979.99317

Square

Length = n
Perimeter 325153536
Area 6607801373331456
Diagonal 114959135.11619

Cube

Length = n
Surface area 39646808239988736
Volume 5.3713749543109E+23
Space diagonal 140795611.15317

Equilateral Triangle

Length = n
Perimeter 243865152
Area 2.8612619262334E+15
Altitude 70397805.576585

Triangular Pyramid

Length = n
Surface area 2.8612619262334E+15
Volume 6.3302260908148E+22
Height 38319711.705397