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

81809 (number)

81809 is an odd 5-digits composite number following 81808 and preceding 81810. In scientific notation, it is written as 8.1809 × 10^4. The sum of its digits is 26. It has a total of 3 prime factors and 8 positive divisors. There are 60480 positive integers (up to 81809) that are relatively prime to 81809.

Interesting facts

81809 has 8 divisors, whose sum is 96960
The reverse of 81809 is 90818
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 5
Sum of Digits 26
Digital Root 8

Name

Name	eighty-one thousand eight hundred nine

Notation

Scientific notation	8.1809 × 10^4
Engineering notation	8.1809 × 10^3

Prime Factorization of 81809

Prime Factorization 403 × 7 × 29

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81809	Product of the distinct prime numbers

The prime factorization of 81809 is 403 × 7 × 29. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 3, 10, 55, 941, 993, 3254, 7446, 76665, 5274, 260628, 564544, 6730805, 5307873, 20116498, 95490623, 118355475, 24471617, 2491173884, 3952735785

Basic calculations (n = 81809)

Multiplication

n×y

n×2	163618
n×3	245427
n×4	327236
n×5	409045

Division

n÷y

n÷2	40904.5
n÷3	27269.666666667
n÷3	20452.25
n÷5	16361.8

Exponentiation

n^y

n²	6692712481
n³	547524115358129
n⁴	4.4792400353333E+19
n⁵	3.6644214805058E+24

Nth Root

^y√n

²√n	286.02272636978
³√n	43.411057090561
⁴√n	16.912206431148
⁵√n	9.6063900591174

Divisors of 81809

1, 7, 29, 203, 403, 2821, 11687, 81809

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	-81808	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 81809 can be divided by 8 positive divisors. The sum of these divisors (counting 81809) is 1, the average is 0.125.

Base conversion 81809

Base	System	Value
2	Binary	10011111110010001
3	Ternary	11011012222
4	Quaternary	103332101
5	Quinary	10104214
6	Senary	1430425
8	Octal	237621
10	Decimal	81809
12	Duodecimal	3b415
16	Hexadecimal	13f91
20	Vigesimal	a4a9
36	Base36	1r4h

Cryptographic Hash Functions

md5	3b011e447e50f42d6e5c26e97e439713
sha1	c7797e26604dacf122ef417b5b2232f1e6000d81
sha256	3dd5394f498e2a215c4ef97c5b325e6e8b15f39884df5087d7f8cb6ac24fbebf
sha512	97b5b4ca000dcbfcf17dfe7dd0be08205e937b6bae65ae31bb3969d29b12fa9cb2816bcfce91a9de69e3949fbb2f6d7976aef21b0dbb55f05ff013126fdfbb67
ripemd-160	8b78b62b83dd83874bdd2b19b96e52c6a5411c11

81809 as geometric shapes

Circle

Radius = n

Diameter	163618
Circumference	514021.10679505
Area	21025776362.898

Sphere

Radius = n

Volume	2.2934636512965E+15
Surface area	84103105451.593
Circumference	514021.10679505

Square

Length = n

Perimeter	327236
Area	6692712481
Diagonal	115695.39732418

Cube

Length = n

Surface area	40156274886
Volume	547524115358129
Space diagonal	141697.3445164

Equilateral Triangle

Length = n

Perimeter	245427
Area	2898029514.3856
Altitude	70848.672258201

Triangular Pyramid

Length = n

Surface area	2898029514.3856
Volume	64526335805483
Height	38565.132441394