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

81644 (number)

81644 is an even 5-digits composite number following 81643 and preceding 81645. In scientific notation, it is written as 8.1644 × 10^4. The sum of its digits is 23. It has a total of 3 prime factors and 6 positive divisors. There are 40820 positive integers (up to 81644) that are relatively prime to 81644.

Interesting facts

81644 has 6 divisors, whose sum is 142884
The reverse of 81644 is 44618
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 5
Sum of Digits 23
Digital Root 5

Name

Name	eighty-one thousand six hundred forty-four

Notation

Scientific notation	8.1644 × 10^4
Engineering notation	8.1644 × 10^3

Prime Factorization of 81644

Prime Factorization 2 × 2 × 20411

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	40822	Product of the distinct prime numbers

The prime factorization of 81644 is 2 × 2 × 20411. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 1, 98, 18, 626, 754, 2767, 7308, 16518, 45146, 244125, 193305, 9009107, 6228454, 97670790, 14154140, 46349099, 135795868, 4710334510, 8016483082

Basic calculations (n = 81644)

Multiplication

n×y

n×2	163288
n×3	244932
n×4	326576
n×5	408220

Division

n÷y

n÷2	40822
n÷3	27214.666666667
n÷3	20411
n÷5	16328.8

Exponentiation

n^y

n²	6665742736
n³	544217899937984
n⁴	4.4432126222537E+19
n⁵	3.6276165133128E+24

Nth Root

^y√n

²√n	285.73414216716
³√n	43.381852294947
⁴√n	16.903672446163
⁵√n	9.6025119169487

Divisors of 81644

1, 2, 4, 20411, 40822, 81644

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	-81643	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 81644 can be divided by 6 positive divisors. The sum of these divisors (counting 81644) is 1, the average is 0.16666666666667.

Base conversion 81644

Base	System	Value
2	Binary	10011111011101100
3	Ternary	11010222212
4	Quaternary	103323230
5	Quinary	10103034
6	Senary	1425552
8	Octal	237354
10	Decimal	81644
12	Duodecimal	3b2b8
16	Hexadecimal	13eec
20	Vigesimal	a424
36	Base36	1qzw

Cryptographic Hash Functions

md5	e7569acb62d3c5fe5a734187d1b2901c
sha1	af528f5114e955e7094370b9cfc9b54b1c6bea37
sha256	dd801277cfde33926cd51f6a4044d4558bb7d7162cf8271c38b019e27ba00387
sha512	86dcc344217df092818c65d7ef4de6423bd9836e92b683db8730e15bd6d0e7d503a42085deb7a25d4c4e366484245b18e6381824ee617560f24c698de23f28c1
ripemd-160	95201f28ab8b3b288ca700fec072cb4cf185b294

81644 as geometric shapes

Circle

Radius = n

Diameter	163288
Circumference	512984.38121937
Area	20941048410.137

Sphere

Radius = n

Volume	2.2796146085296E+15
Surface area	83764193640.549
Circumference	512984.38121937

Square

Length = n

Perimeter	326576
Area	6665742736
Diagonal	115462.05208639

Cube

Length = n

Surface area	39994456416
Volume	544217899937984
Space diagonal	141411.55613315

Equilateral Triangle

Length = n

Perimeter	244932
Area	2886351272.2338
Altitude	70705.778066577

Triangular Pyramid

Length = n

Surface area	2886351272.2338
Volume	64136694581542
Height	38487.350695463