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

81209 (number)

81209 is an odd 5-digits composite number following 81208 and preceding 81210. In scientific notation, it is written as 8.1209 × 10^4. The sum of its digits is 20. It has a total of 3 prime factors and 6 positive divisors. There are 76160 positive integers (up to 81209) that are relatively prime to 81209.

Interesting facts

81209 has 6 divisors, whose sum is 86574
The reverse of 81209 is 90218
Previous prime number is 17

Basic properties

Is Prime? no
Number parity odd
Number length 5
Sum of Digits 20
Digital Root 2

Name

Name	eighty-one thousand two hundred nine

Notation

Scientific notation	8.1209 × 10^4
Engineering notation	8.1209 × 10^3

Prime Factorization of 81209

Prime Factorization 17 × 17 × 281

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	4777	Product of the distinct prime numbers

The prime factorization of 81209 is 17 × 17 × 281. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 6, 90, 1, 836, 399, 6017, 5278, 20598, 54114, 866294, 270295, 332632, 8942484, 6151805, 6340364, 870734418, 266955620, 8776169759, 6372097192

Basic calculations (n = 81209)

Multiplication

n×y

n×2	162418
n×3	243627
n×4	324836
n×5	406045

Division

n÷y

n÷2	40604.5
n÷3	27069.666666667
n÷3	20302.25
n÷5	16241.8

Exponentiation

n^y

n²	6594901681
n³	535565370612329
n⁴	4.3492728182057E+19
n⁵	3.5320009629366E+24

Nth Root

^y√n

²√n	284.97192844208
³√n	43.304668748289
⁴√n	16.881111587869
⁵√n	9.592257584763

Divisors of 81209

1, 17, 281, 289, 4777, 81209

6 divisors

τ	Total Divisors	6	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81208	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.16666666666667	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	6	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81209 can be divided by 6 positive divisors. The sum of these divisors (counting 81209) is 1, the average is 0.16666666666667.

Base conversion 81209

Base	System	Value
2	Binary	10011110100111001
3	Ternary	11010101202
4	Quaternary	103310321
5	Quinary	10044314
6	Senary	1423545
8	Octal	236471
10	Decimal	81209
12	Duodecimal	3abb5
16	Hexadecimal	13d39
20	Vigesimal	a309
36	Base36	1qnt

Cryptographic Hash Functions

md5	aaafd20d12801ae1b6bf8123a7648e14
sha1	f39652d6aae7168cb62acf0ab3a980677c7af2c6
sha256	5c5e4bc14cf44ecd8be2d6f00b117f05b6144361ea979cfe50a32d318d815fbb
sha512	d1111209b98d1b50c52956b26f2f25324d86acd623b9599795cfa75e15c80498dbd88b088e1d007486dc72d76f057a1e47b84551c75b1e78cd4c08434b6c84d0
ripemd-160	2a8410586a4f8b4e01d90fa978e1f39f55fd6c22

81209 as geometric shapes

Circle

Radius = n

Diameter	162418
Circumference	510251.19561075
Area	20718494672.177

Sphere

Radius = n

Volume	2.2433709784437E+15
Surface area	82873978688.706
Circumference	510251.19561075

Square

Length = n

Perimeter	324836
Area	6594901681
Diagonal	114846.86918676

Cube

Length = n

Surface area	39569410086
Volume	535565370612329
Space diagonal	140658.11403186

Equilateral Triangle

Length = n

Perimeter	243627
Area	2855676195.6033
Altitude	70329.05701593

Triangular Pyramid

Length = n

Surface area	2855676195.6033
Volume	63116984221444
Height	38282.289728919