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

81738181 (number)

81738181 is an odd 8-digits composite number following 81738180 and preceding 81738182. In scientific notation, it is written as 8.1738181 × 10^7. The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors. There are 70061292 positive integers (up to 81738181) that are relatively prime to 81738181.

Interesting facts

81738181 has 4 divisors, whose sum is 93415072
The reverse of 81738181 is 18183718
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

Name	eighty-one million seven hundred thirty-eight thousand one hundred eighty-one

Notation

Scientific notation	8.1738181 × 10^7
Engineering notation	8.1738181 × 10^6

Prime Factorization of 81738181

Prime Factorization 7 × 11676883

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	81738181	Product of the distinct prime numbers

The prime factorization of 81738181 is 7 × 11676883. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 4, 20, 16, 716, 989, 682, 196, 64487, 68490, 607331, 629095, 680937, 401992, 82003589, 6544253, 422219183, 53024066, 9532825080, 7978975187

Basic calculations (n = 81738181)

Multiplication

n×y

n×2	163476362
n×3	245214543
n×4	326952724
n×5	408690905

Division

n÷y

n÷2	40869090.5
n÷3	27246060.333333
n÷3	20434545.25
n÷5	16347636.2

Exponentiation

n^y

n²	6681130233188761
n³	5.4610343228496E+23
n⁴	4.4637501192829E+31
n⁵	3.6485881518872E+39

Nth Root

^y√n

²√n	9040.9170441941
³√n	433.98527029935
⁴√n	95.083737012142
⁵√n	38.237104129067

Divisors of 81738181

1, 7, 11676883, 81738181

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	-81738180	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 81738181 can be divided by 4 positive divisors. The sum of these divisors (counting 81738181) is 1, the average is 0.25.

Base conversion 81738181

Base	System	Value
2	Binary	100110111110011100111000101
3	Ternary	12200210201201001
4	Quaternary	10313303213011
5	Quinary	131411110211
6	Senary	12035533301
8	Octal	467634705
10	Decimal	81738181
12	Duodecimal	2345a231
16	Hexadecimal	4df39c5
20	Vigesimal	15ah591
36	Base36	1cnxl1

Cryptographic Hash Functions

md5	435e7ca078adf763158ae4e3a934a4a1
sha1	65c2c6a925e35588b7d88f5713683b5665f920cf
sha256	bea341e6f0ccc5448e62fd3ad043b67fab204731f47692352bb9dbf003a0e80b
sha512	112cc86252480b68dc65fa4f391f712bb00746f502d99756564e4a0104956287219d54852d32be91d5b0368fe1333d6c9c3505585bcdfb093483e7852b971a72
ripemd-160	14bd31f46a23ee23de11291562051c7877515421

81738181 as geometric shapes

Circle

Radius = n

Diameter	163476362
Circumference	513576137.89479
Area	2.0989389658262E+16

Sphere

Radius = n

Volume	2.2875127079554E+24
Surface area	8.395755863305E+16
Circumference	513576137.89479

Square

Length = n

Perimeter	326952724
Area	6681130233188761
Diagonal	115595244.13391

Cube

Length = n

Surface area	40086781399132566
Volume	5.4610343228496E+23
Space diagonal	141574682.41026

Equilateral Triangle

Length = n

Perimeter	245214543
Area	2.8930142539669E+15
Altitude	70787341.205131

Triangular Pyramid

Length = n

Surface area	2.8930142539669E+15
Volume	6.4358906699657E+22
Height	38531748.044636