Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

81191009 (number)

81191009 is an odd 8-digits composite number following 81191008 and preceding 81191010. In scientific notation, it is written as 8.1191009 × 10^7. The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors. There are 75128256 positive integers (up to 81191009) that are relatively prime to 81191009.

Interesting facts

81191009 has 8 divisors, whose sum is 87452640
The reverse of 81191009 is 90019118
Previous prime number is 43

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2

Name

Name	eighty-one million one hundred ninety-one thousand nine

Notation

Scientific notation	8.1191009 × 10^7
Engineering notation	8.1191009 × 10^6

Prime Factorization of 81191009

Prime Factorization 19 × 43 × 99377

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81191009	Product of the distinct prime numbers

The prime factorization of 81191009 is 19 × 43 × 99377. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 3, 66, 65, 731, 11, 9104, 9123, 42852, 30222, 237856, 822968, 698656, 6165370, 88044213, 52066511, 821012772, 502033482, 6201595553, 6754344575

Basic calculations (n = 81191009)

Multiplication

n×y

n×2	162382018
n×3	243573027
n×4	324764036
n×5	405955045

Division

n÷y

n÷2	40595504.5
n÷3	27063669.666667
n÷3	20297752.25
n÷5	16238201.8

Exponentiation

n^y

n²	6591979942438081
n³	5.3520950283431E+23
n⁴	4.3454199561506E+31
n⁵	3.528090307686E+39

Nth Root

^y√n

²√n	9010.6053625714
³√n	433.01470614109
⁴√n	94.92420851696
⁵√n	38.185773106671

Divisors of 81191009

1, 19, 43, 817, 99377, 1888163, 4273211, 81191009

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81191008	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81191009 can be divided by 8 positive divisors. The sum of these divisors (counting 81191009) is 1, the average is 0.125.

Base conversion 81191009

Base	System	Value
2	Binary	100110101101110000001100001
3	Ternary	12122202221010102
4	Quaternary	10311232001201
5	Quinary	131241103014
6	Senary	12020112145
8	Octal	465560141
10	Decimal	81191009
12	Duodecimal	23235655
16	Hexadecimal	4d6e061
20	Vigesimal	1578ha9
36	Base36	1cc7dt

Cryptographic Hash Functions

md5	fa31ee994df147b78a2d0e9776b43bc9
sha1	142977680d1b84de61fade98c7314c484399a4dc
sha256	eb40aa92ee29da9522334994180303959dec467c384dde81ca033073911f5c78
sha512	221335775cb1e06167feaf77470cd07fe8a7d40e80634f2c1079803c559f194bd6261f89f31e03bf303f0a6d89a5ef2f4b7eb56d193d1ef0b172d784cd1e5d7e
ripemd-160	8964241bb6878a4c3a2d79216726af5f349ba13b

81191009 as geometric shapes

Circle

Radius = n

Diameter	162382018
Circumference	510138154.82389
Area	2.0709315759775E+16

Sphere

Radius = n

Volume	2.241880322981E+24
Surface area	8.2837263039099E+16
Circumference	510138154.82389

Square

Length = n

Perimeter	324764036
Area	6591979942438081
Diagonal	114821426.07056

Cube

Length = n

Surface area	39551879654628486
Volume	5.3520950283431E+23
Space diagonal	140626952.70578

Equilateral Triangle

Length = n

Perimeter	243573027
Area	2.8544110456944E+15
Altitude	70313476.352891

Triangular Pyramid

Length = n

Surface area	2.8544110456944E+15
Volume	6.3075044801604E+22
Height	38273808.690185