81508768 (number)

81508768 is an even 8-digits composite number following 81508767 and preceding 81508769. In scientific notation, it is written as 8.1508768 × 10^7. The sum of its digits is 43. It has a total of 7 prime factors and 24 positive divisors. There are 37049280 positive integers (up to 81508768) that are relatively prime to 81508768.

Interesting facts

Basic properties

Name

Name eighty-one million five hundred eight thousand seven hundred sixty-eight

Notation

Scientific notation 8.1508768 × 10^7
Engineering notation 8.1508768 × 10^6

Prime Factorization of 81508768

Prime Factorization 2 × 2 × 2 × 2 × 2 × 11 × 231559

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 5094298
Product of the distinct prime numbers

The prime factorization of 81508768 is 2 × 2 × 2 × 2 × 2 × 11 × 231559. Since it has a total of 7 prime factors.

Most popular turbo-numbers

2, 2, 7, 97, 57, 180, 9008, 4655, 20209, 2661, 728205, 250481, 9329633, 7982713, 65844023, 731917, 649956635, 981551185, 1625733866, 3875787755

Basic calculations (n = 81508768)

Multiplication

n×y
n×2 163017536
n×3 244526304
n×4 326035072
n×5 407543840

Division

n÷y
n÷2 40754384
n÷3 27169589.333333
n÷3 20377192
n÷5 16301753.6

Exponentiation

ny
n2 6643679260877824
n3 5.415181115413E+23
n4 4.4138474121418E+31
n5 3.5976726470367E+39

Nth Root

y√n
2√n 9028.2206441801
3√n 433.57887044542
4√n 95.016949246859
5√n 38.215616120743

Divisors of 81508768

1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 352, 231559, 463118, 926236, 1852472, 2547149, 3704944, 5094298, 7409888, 10188596, 20377192, 40754384, 81508768

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 -81508767
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 81508768 can be divided by 24 positive divisors. The sum of these divisors (counting 81508768) is 1, the average is 0.041666666666667.

Base conversion 81508768

Base System Value
2 Binary 100110110111011100110100000
3 Ternary 12200101002000021
4 Quaternary 10312323212200
5 Quinary 131331240033
6 Senary 12031003224
8 Octal 466734640
10 Decimal 81508768
12 Duodecimal 23369514
16 Hexadecimal 4dbb9a0
20 Vigesimal 1598bi8
36 Base36 1cj0kg

Cryptographic Hash Functions

md5 1e9875b69706499378a02c32d46deeec
sha1 ffd8b726c0423294c4cc95622eaf4fb42f0fd98e
sha256 b9f00ab50b6a471541dad96eb0fefb3d8c8ba38df7ed49159fa2c7ae9658f0cd
sha512 4e55566b048ca89d197081056cc5bb8df5796e2a529cf1390540cede7a72b924b07eb3db03d8525046c362a7a35b9e169dc2fd29def61a9e68eafeaa3cfcf031
ripemd-160 4dbe6d61fa6489f1eec2a7a2538159b5f8334280

81508768 as geometric shapes

Circle

Radius = n
Diameter 163017536
Circumference 512134693.50391
Area 2.0871733958781E+16

Sphere

Radius = n
Volume 2.2683057613386E+24
Surface area 8.3486935835123E+16
Circumference 512134693.50391

Square

Length = n
Perimeter 326035072
Area 6643679260877824
Diagonal 115270805.15792

Cube

Length = n
Surface area 39862075565266944
Volume 5.415181115413E+23
Space diagonal 141177327.43834

Equilateral Triangle

Length = n
Perimeter 244526304
Area 2.876797507258E+15
Altitude 70588663.719172

Triangular Pyramid

Length = n
Surface area 2.876797507258E+15
Volume 6.3818521467698E+22
Height 38423601.719307