81128568 (number)

81128568 is an even 8-digits composite number following 81128567 and preceding 81128569. In scientific notation, it is written as 8.1128568 × 10^7. The sum of its digits is 39. It has a total of 7 prime factors and 64 positive divisors. There are 26027136 positive integers (up to 81128568) that are relatively prime to 81128568.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1128568 × 10^7
Engineering notation 8.1128568 × 10^6

Prime Factorization of 81128568

Prime Factorization 2 × 2 × 2 × 3 × 37 × 103 × 887

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 20282142
Product of the distinct prime numbers

The prime factorization of 81128568 is 2 × 2 × 2 × 3 × 37 × 103 × 887. Since it has a total of 7 prime factors.

Most popular turbo-numbers

7, 2, 93, 71, 960, 532, 5823, 2944, 86979, 50728, 21701, 845793, 8283237, 7740541, 72941082, 30224161, 679580670, 557016645, 3714471492, 568596517

Basic calculations (n = 81128568)

Multiplication

n×y
n×2 162257136
n×3 243385704
n×4 324514272
n×5 405642840

Division

n÷y
n÷2 40564284
n÷3 27042856
n÷3 20282142
n÷5 16225713.6

Exponentiation

ny
n2 6581844545730624
n3 5.3397562279374E+23
n4 4.3320677624164E+31
n5 3.5145445404381E+39

Nth Root

y√n
2√n 9007.1398345979
3√n 432.90367247765
4√n 94.905952577264
5√n 38.17989784606

Divisors of 81128568

1, 2, 3, 4, 6, 8, 12, 24, 37, 74, 103, 111, 148, 206, 222, 296, 309, 412, 444, 618, 824, 887, 888, 1236, 1774, 2472, 2661, 3548, 3811, 5322, 7096, 7622, 10644, 11433, 15244, 21288, 22866, 30488, 32819, 45732, 65638, 91361, 91464, 98457, 131276, 182722, 196914, 262552, 274083, 365444, 393828, 548166, 730888, 787656, 1096332, 2192664, 3380357, 6760714, 10141071, 13521428, 20282142, 27042856, 40564284, 81128568

64 divisors

τ Total Divisors 64
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81128567
Sum of the proper positive divisors of n
A Arithmetic Mean 0.015625
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 64
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81128568 can be divided by 64 positive divisors. The sum of these divisors (counting 81128568) is 1, the average is 0.015625.

Base conversion 81128568

Base System Value
2 Binary 100110101011110110001111000
3 Ternary 12122122202110210
4 Quaternary 10311132301320
5 Quinary 131232103233
6 Senary 12014511120
8 Octal 465366170
10 Decimal 81128568
12 Duodecimal 232054a0
16 Hexadecimal 4d5ec78
20 Vigesimal 1571188
36 Base36 1cav7c

Cryptographic Hash Functions

md5 ffbc85ce514093f73c8d694149656592
sha1 7ee581d8228fe9e03f2a0144ad0a662747f62711
sha256 fb5f0db9782dbfdc73493da32f383c2e9edf22882492f248af52770c79bc1c88
sha512 096ca1298739da5a594901fcd479f22f5d2d94de4c5c38a554cf31c07d73555e8268798f3a0955640386c59855f7765e50ac60d835b2b1b60af487d1976c875e
ripemd-160 ad7706de0ae4d113954d34805fc2892735f624b9

81128568 as geometric shapes

Circle

Radius = n
Diameter 162257136
Circumference 509745826.45012
Area 2.0677474471937E+16

Sphere

Radius = n
Volume 2.2367118583531E+24
Surface area 8.270989788775E+16
Circumference 509745826.45012

Square

Length = n
Perimeter 324514272
Area 6581844545730624
Diagonal 114733121.16151

Cube

Length = n
Surface area 39491067274383744
Volume 5.3397562279374E+23
Space diagonal 140518801.72131

Equilateral Triangle

Length = n
Perimeter 243385704
Area 2.8500222901814E+15
Altitude 70259400.860653

Triangular Pyramid

Length = n
Surface area 2.8500222901814E+15
Volume 6.2929630644293E+22
Height 38244373.720503