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

81443721 (number)

81443721 is an odd 8-digits composite number following 81443720 and preceding 81443722. In scientific notation, it is written as 8.1443721 × 10^7. The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors. There are 54103392 positive integers (up to 81443721) that are relatively prime to 81443721.

Interesting facts

81443721 has 8 divisors, whose sum is 108976480
The reverse of 81443721 is 12734418
Previous prime number is 283

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3

Name

Name	eighty-one million four hundred forty-three thousand seven hundred twenty-one

Notation

Scientific notation	8.1443721 × 10^7
Engineering notation	8.1443721 × 10^6

Prime Factorization of 81443721

Prime Factorization 3 × 283 × 95929

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	81443721	Product of the distinct prime numbers

The prime factorization of 81443721 is 3 × 283 × 95929. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 2, 77, 85, 147, 682, 8965, 3946, 23294, 11451, 563984, 946665, 6709617, 9208343, 28414848, 65318785, 150165713, 538476355, 8794088738, 5894760857

Basic calculations (n = 81443721)

Multiplication

n×y

n×2	162887442
n×3	244331163
n×4	325774884
n×5	407218605

Division

n÷y

n÷2	40721860.5
n÷3	27147907
n÷3	20360930.25
n÷5	16288744.2

Exponentiation

n^y

n²	6633079690325841
n³	5.4022269166966E+23
n⁴	4.3997746178213E+31
n⁵	3.5833401643672E+39

Nth Root

^y√n

²√n	9024.6174988195
³√n	433.46350244616
⁴√n	94.997986814561
⁵√n	38.209514678823

Divisors of 81443721

1, 3, 283, 849, 95929, 287787, 27147907, 81443721

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	-81443720	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 81443721 can be divided by 8 positive divisors. The sum of these divisors (counting 81443721) is 1, the average is 0.125.

Base conversion 81443721

Base	System	Value
2	Binary	100110110101011101110001001
3	Ternary	12200020202210010
4	Quaternary	10312223232021
5	Quinary	131322144341
6	Senary	12025342133
8	Octal	466535611
10	Decimal	81443721
12	Duodecimal	23337949
16	Hexadecimal	4dabb89
20	Vigesimal	1590961
36	Base36	1chmdl

Cryptographic Hash Functions

md5	f112a9fe46925f1303c7759a0a8a5862
sha1	0b00d25367bc6ade92dab347d7602f0461f0e9b0
sha256	2eae4058a0560852ebee8106e55bab296f7f680983e1c366222ab37e426c4fea
sha512	11742b4c685a91660c63a27da98b52757d9eb81af8d8eacdf0a841bccdd53c7168f136ff0b9ca53ab1a4673a015c3eae6c316e144f01016f06c6a058a657a60d
ripemd-160	2ab791877b188abd9c48faca0787f5d4229ea6db

81443721 as geometric shapes

Circle

Radius = n

Diameter	162887442
Circumference	511725991.14923
Area	2.0838434425803E+16

Sphere

Radius = n

Volume	2.2628795192692E+24
Surface area	8.3353737703213E+16
Circumference	511725991.14923

Square

Length = n

Perimeter	325774884
Area	6633079690325841
Diagonal	115178814.80833

Cube

Length = n

Surface area	39798478141955046
Volume	5.4022269166966E+23
Space diagonal	141064662.72946

Equilateral Triangle

Length = n

Perimeter	244331163
Area	2.8722077585744E+15
Altitude	70532331.364732

Triangular Pyramid

Length = n

Surface area	2.8722077585744E+15
Volume	6.3665854771745E+22
Height	38392938.269443