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

81878 (number)

81878 is an even 5-digits composite number following 81877 and preceding 81879. In scientific notation, it is written as 8.1878 × 10^4. The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors. There are 40938 positive integers (up to 81878) that are relatively prime to 81878.

Interesting facts

81878 has 4 divisors, whose sum is 122820
The reverse of 81878 is 87818
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 5
Sum of Digits 32
Digital Root 5

Name

Name	eighty-one thousand eight hundred seventy-eight

Notation

Scientific notation	8.1878 × 10^4
Engineering notation	8.1878 × 10^3

Prime Factorization of 81878

Prime Factorization 2 × 40939

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81878	Product of the distinct prime numbers

The prime factorization of 81878 is 2 × 40939. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 7, 27, 99, 176, 369, 9619, 6139, 67595, 18748, 830010, 7006, 4326714, 7227559, 39307042, 28945991, 377609656, 823274650, 909145626, 1421473311

Basic calculations (n = 81878)

Multiplication

n×y

n×2	163756
n×3	245634
n×4	327512
n×5	409390

Division

n÷y

n÷2	40939
n÷3	27292.666666667
n÷3	20469.5
n÷5	16375.6

Exponentiation

n^y

n²	6704006884
n³	548910675648152
n⁴	4.4943708300719E+19
n⁵	3.6799009482463E+24

Nth Root

^y√n

²√n	286.14332073281
³√n	43.423258361038
⁴√n	16.915771360858
⁵√n	9.6080099723391

Divisors of 81878

1, 2, 40939, 81878

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-81877	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81878 can be divided by 4 positive divisors. The sum of these divisors (counting 81878) is 1, the average is 0.25.

Base conversion 81878

Base	System	Value
2	Binary	10011111111010110
3	Ternary	11011022112
4	Quaternary	103333112
5	Quinary	10110003
6	Senary	1431022
8	Octal	237726
10	Decimal	81878
12	Duodecimal	3b472
16	Hexadecimal	13fd6
20	Vigesimal	a4di
36	Base36	1r6e

Cryptographic Hash Functions

md5	4462120c72efd76a02e2219ea6fd3cf5
sha1	edfa770f8fd777cd28d57b09c3e1769ab64672c3
sha256	e1379b8e72928f4b66cdb68196a56c6029c457eedc77340b9058ddc241d6ba40
sha512	fb39922bec3d2f95a5abc65e1d2b3637cb414a88c8186b365a657f7feb357889c976f0b8c4989a9f0121383cb0aeb9eddc2241893698836b854918272ab7e0ba
ripemd-160	486165cef911cd04f65fbba6bc46957dc2929ceb

81878 as geometric shapes

Circle

Radius = n

Diameter	163756
Circumference	514454.64658125
Area	21061258776.39

Sphere

Radius = n

Volume	2.2992716614577E+15
Surface area	84245035105.559
Circumference	514454.64658125

Square

Length = n

Perimeter	327512
Area	6704006884
Diagonal	115792.97805998

Cube

Length = n

Surface area	40224041304
Volume	548910675648152
Space diagonal	141816.85602212

Equilateral Triangle

Length = n

Perimeter	245634
Area	2902920134.3449
Altitude	70908.428011062

Triangular Pyramid

Length = n

Surface area	2902920134.3449
Volume	64689743502750
Height	38597.659353328