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

81641 (number)

81641 is an odd 5-digits composite number following 81640 and preceding 81642. In scientific notation, it is written as 8.1641 × 10^4. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 68688 positive integers (up to 81641) that are relatively prime to 81641.

Interesting facts

81641 has 8 divisors, whose sum is 95040
The reverse of 81641 is 14618
Previous prime number is 107

Basic properties

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

Name

Name	eighty-one thousand six hundred forty-one

Notation

Scientific notation	8.1641 × 10^4
Engineering notation	8.1641 × 10^3

Prime Factorization of 81641

Prime Factorization 7 × 107 × 109

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81641	Product of the distinct prime numbers

The prime factorization of 81641 is 7 × 107 × 109. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 3, 11, 50, 709, 328, 3700, 5076, 70622, 17120, 729502, 639948, 6304578, 3267272, 97587817, 71849172, 515266012, 743414716, 6319392420, 1479796863

Basic calculations (n = 81641)

Multiplication

n×y

n×2	163282
n×3	244923
n×4	326564
n×5	408205

Division

n÷y

n÷2	40820.5
n÷3	27213.666666667
n÷3	20410.25
n÷5	16328.2

Exponentiation

n^y

n²	6665252881
n³	544157910457721
n⁴	4.4425595967679E+19
n⁵	3.6269500803973E+24

Nth Root

^y√n

²√n	285.72889248377
³√n	43.381320934607
⁴√n	16.903517163116
⁵√n	9.6024413472579

Divisors of 81641

1, 7, 107, 109, 749, 763, 11663, 81641

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	-81640	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 81641 can be divided by 8 positive divisors. The sum of these divisors (counting 81641) is 1, the average is 0.125.

Base conversion 81641

Base	System	Value
2	Binary	10011111011101001
3	Ternary	11010222202
4	Quaternary	103323221
5	Quinary	10103031
6	Senary	1425545
8	Octal	237351
10	Decimal	81641
12	Duodecimal	3b2b5
16	Hexadecimal	13ee9
20	Vigesimal	a421
36	Base36	1qzt

Cryptographic Hash Functions

md5	90b0fb17d027d5a45b5f5320aff4d61b
sha1	0d6a002756f54105297dbd7586036f24cd856a7a
sha256	ed7afae76a10b69baa6e81fb3646a3db99f09f6e3191238f4dc860b74893c367
sha512	e121839be5867bad9420c89157c3fdafaa491083ba02ca4a8cf4b5423e01d6026d54ba68480f45c4c29a2728164c4bced75e4c7bba6c35f47c2ebe4be7fb6954
ripemd-160	bbe4e7fff07bab81c99fe4a7a4d2c2fb1c7a050d

81641 as geometric shapes

Circle

Radius = n

Diameter	163282
Circumference	512965.53166345
Area	20939509485.268

Sphere

Radius = n

Volume	2.2793633251823E+15
Surface area	83758037941.071
Circumference	512965.53166345

Square

Length = n

Perimeter	326564
Area	6665252881
Diagonal	115457.8094457

Cube

Length = n

Surface area	39991517286
Volume	544157910457721
Space diagonal	141406.35998073

Equilateral Triangle

Length = n

Perimeter	244923
Area	2886139158.7967
Altitude	70703.179990365

Triangular Pyramid

Length = n

Surface area	2886139158.7967
Volume	64129624753493
Height	38485.936481901