81128910 (number)

81128910 is an even 8-digits composite number following 81128909 and preceding 81128911. In scientific notation, it is written as 8.1128910 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 21634368 positive integers (up to 81128910) that are relatively prime to 81128910.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1128910 × 10^7
Engineering notation 8.1128910 × 10^6

Prime Factorization of 81128910

Prime Factorization 2 × 3 × 5 × 2704297

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81128910
Product of the distinct prime numbers

The prime factorization of 81128910 is 2 × 3 × 5 × 2704297. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 1, 89, 5, 278, 775, 6451, 90, 76920, 24430, 88744, 140086, 8302866, 1376477, 17006460, 48974842, 681788463, 929686438, 7012121019, 1352628083

Basic calculations (n = 81128910)

Multiplication

n×y
n×2 162257820
n×3 243386730
n×4 324515640
n×5 405644550

Division

n÷y
n÷2 40564455
n÷3 27042970
n÷3 20282227.5
n÷5 16225782

Exponentiation

ny
n2 6581900037788100
n3 5.3398237579471E+23
n4 4.3321408107435E+31
n5 3.5146186194214E+39

Nth Root

y√n
2√n 9007.1588195168
3√n 432.90428078309
4√n 94.906052596854
5√n 38.179930035715

Divisors of 81128910

1, 2, 3, 5, 6, 10, 15, 30, 2704297, 5408594, 8112891, 13521485, 16225782, 27042970, 40564455, 81128910

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 -81128909
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 81128910 can be divided by 16 positive divisors. The sum of these divisors (counting 81128910) is 1, the average is 0.0625.

Base conversion 81128910

Base System Value
2 Binary 100110101011110110111001110
3 Ternary 12122122202221110
4 Quaternary 10311132313032
5 Quinary 131232111120
6 Senary 12014512450
8 Octal 465366716
10 Decimal 81128910
12 Duodecimal 23205726
16 Hexadecimal 4d5edce
20 Vigesimal 157125a
36 Base36 1cavgu

Cryptographic Hash Functions

md5 94a22b52d803cfd996b015c608176467
sha1 7ddf09e28a7b8bd2454325364cd52f504a9dc6b8
sha256 3ece4165796bbe25629d128a189933cd6bb35dcd33dd5bf62c2b552b2985b508
sha512 f993143a55fbfb6451849319d79e3a9ded4e04e056e93a633b637d56bb3a4786e556f57fc69470ef3085925967bd4ee779a5b3978cdca5e716c5abab34352fea
ripemd-160 50206ddedaf33e5078778e8a9d64d7060181fde0

81128910 as geometric shapes

Circle

Radius = n
Diameter 162257820
Circumference 509747975.29949
Area 2.0677648805377E+16

Sphere

Radius = n
Volume 2.2367401452574E+24
Surface area 8.271059522151E+16
Circumference 509747975.29949

Square

Length = n
Perimeter 324515640
Area 6581900037788100
Diagonal 114733604.82255

Cube

Length = n
Surface area 39491400226728600
Volume 5.3398237579471E+23
Space diagonal 140519394.08268

Equilateral Triangle

Length = n
Perimeter 243386730
Area 2.8500463189471E+15
Altitude 70259697.041341

Triangular Pyramid

Length = n
Surface area 2.8500463189471E+15
Volume 6.293042649309E+22
Height 38244534.940849