81128810 (number)

81128810 is an even 8-digits composite number following 81128809 and preceding 81128811. In scientific notation, it is written as 8.1128810 × 10^7. The sum of its digits is 29. It has a total of 4 prime factors and 16 positive divisors. There are 27815424 positive integers (up to 81128810) that are relatively prime to 81128810.

Interesting facts

Basic properties

Name

Name eighty-one million one hundred twenty-eight thousand eight hundred ten

Notation

Scientific notation 8.1128810 × 10^7
Engineering notation 8.1128810 × 10^6

Prime Factorization of 81128810

Prime Factorization 2 × 5 × 49 × 165569

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81128810
Product of the distinct prime numbers

The prime factorization of 81128810 is 2 × 5 × 49 × 165569. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 6, 54, 99, 862, 754, 5723, 9289, 63710, 82516, 543328, 810666, 5312303, 5375042, 20154336, 16477141, 937272572, 292300924, 1736240744, 8247473558

Basic calculations (n = 81128810)

Multiplication

n×y
n×2 162257620
n×3 243386430
n×4 324515240
n×5 405644050

Division

n÷y
n÷2 40564405
n÷3 27042936.666667
n÷3 20282202.5
n÷5 16225762

Exponentiation

ny
n2 6581883812016100
n3 5.3398040122713E+23
n4 4.332119451488E+31
n5 3.5145969587707E+39

Nth Root

y√n
2√n 9007.1532683751
3√n 432.90410291617
4√n 94.906023351393
5√n 38.179920623546

Divisors of 81128810

1, 2, 5, 10, 49, 98, 245, 490, 165569, 331138, 827845, 1655690, 8112881, 16225762, 40564405, 81128810

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81128809
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81128810 can be divided by 16 positive divisors. The sum of these divisors (counting 81128810) is 1, the average is 0.0625.

Base conversion 81128810

Base System Value
2 Binary 100110101011110110101101010
3 Ternary 12122122202210202
4 Quaternary 10311132311222
5 Quinary 131232110220
6 Senary 12014512202
8 Octal 465366552
10 Decimal 81128810
12 Duodecimal 23205662
16 Hexadecimal 4d5ed6a
20 Vigesimal 157120a
36 Base36 1cave2

Cryptographic Hash Functions

md5 88f50e31f24ef9a3ca24c1f47c31ff03
sha1 5edbc2cbbc67c4bfcb39b2849de08307f4993ff1
sha256 225b974e3d18ba2194d19145c8f2ef6d59b7771ba4f3a8bc76be1a18217880ec
sha512 39ee5ce738654082ae36ff9300654891c53b985aa8ce850fb1daf00a54712db001f271ea73fb01ada3aebd1b2e037be373664571a7fcc2bd8d90a26fd86e5962
ripemd-160 b0d2959c17fc53e6b75d70865e3a64f92555abb4

81128810 as geometric shapes

Circle

Radius = n
Diameter 162257620
Circumference 509747346.98096
Area 2.0677597830611E+16

Sphere

Radius = n
Volume 2.2367318742081E+24
Surface area 8.2710391322445E+16
Circumference 509747346.98096

Square

Length = n
Perimeter 324515240
Area 6581883812016100
Diagonal 114733463.40119

Cube

Length = n
Surface area 39491302872096600
Volume 5.3398040122713E+23
Space diagonal 140519220.8776

Equilateral Triangle

Length = n
Perimeter 243386430
Area 2.8500392929818E+15
Altitude 70259610.438801

Triangular Pyramid

Length = n
Surface area 2.8500392929818E+15
Volume 6.293019378807E+22
Height 38244487.800397