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

81020 (number)

81020 is an even 5-digits composite number following 81019 and preceding 81021. In scientific notation, it is written as 8.1020 × 10^4. The sum of its digits is 11. It has a total of 4 prime factors and 12 positive divisors. There are 32400 positive integers (up to 81020) that are relatively prime to 81020.

Interesting facts

81020 has 12 divisors, whose sum is 170184
The reverse of 81020 is 02018
Previous prime number is 5

Basic properties

Is Prime? no
Number parity even
Number length 5
Sum of Digits 11
Digital Root 2

Name

Name	eighty-one thousand twenty

Notation

Scientific notation	8.1020 × 10^4
Engineering notation	8.1020 × 10^3

Prime Factorization of 81020

Prime Factorization 2 × 2 × 5 × 4051

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	40510	Product of the distinct prime numbers

The prime factorization of 81020 is 2 × 2 × 5 × 4051. Since it has a total of 4 prime factors.

Most popular turbo-numbers

8, 2, 16, 15, 519, 808, 6096, 3497, 34125, 41772, 788843, 410573, 701761, 3123241, 63972636, 53944774, 503872086, 586294109, 5336760830, 4868696533

Basic calculations (n = 81020)

Multiplication

n×y

n×2	162040
n×3	243060
n×4	324080
n×5	405100

Division

n÷y

n÷2	40510
n÷3	27006.666666667
n÷3	20255
n÷5	16204

Exponentiation

n^y

n²	6564240400
n³	531834757208000
n⁴	4.3089252028992E+19
n⁵	3.4910911993889E+24

Nth Root

^y√n

²√n	284.64012366495
³√n	43.271047926217
⁴√n	16.871281032125
⁵√n	9.5877885560505

Divisors of 81020

1, 2, 4, 5, 10, 20, 4051, 8102, 16204, 20255, 40510, 81020

12 divisors

τ	Total Divisors	12	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81019	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.083333333333333	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	12	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81020 can be divided by 12 positive divisors. The sum of these divisors (counting 81020) is 1, the average is 0.083333333333333.

Base conversion 81020

Base	System	Value
2	Binary	10011110001111100
3	Ternary	11010010202
4	Quaternary	103301330
5	Quinary	10043040
6	Senary	1423032
8	Octal	236174
10	Decimal	81020
12	Duodecimal	3aa78
16	Hexadecimal	13c7c
20	Vigesimal	a2b0
36	Base36	1qik

Cryptographic Hash Functions

md5	3094ee804a703dbc4df36accadd73684
sha1	129984cfb215af208877ce330568661753c0e313
sha256	835bbd06fdfb83e4456242ddaee103efddd62f132f4d2de72a4a1b83c07ee3cf
sha512	f78181a9ea3dc26f93aca73f6baede403fcbb5075d8827518b16289675b36b8a2ce11afcca6323572ba99a02c3572b1885a78943712c646d5e0ca9a618438cba
ripemd-160	e483d1cfa14c2361a6899de80955e333a870f3b0

81020 as geometric shapes

Circle

Radius = n

Diameter	162040
Circumference	509063.67358769
Area	20622169417.037

Sphere

Radius = n

Volume	2.2277442215578E+15
Surface area	82488677668.149
Circumference	509063.67358769

Square

Length = n

Perimeter	324080
Area	6564240400
Diagonal	114579.58282347

Cube

Length = n

Surface area	39385442400
Volume	531834757208000
Space diagonal	140330.75642923

Equilateral Triangle

Length = n

Perimeter	243060
Area	2842399471.4741
Altitude	70165.378214615

Triangular Pyramid

Length = n

Surface area	2842399471.4741
Volume	62677327215413
Height	38193.194274489