81444618 (number)

81444618 is an even 8-digits composite number following 81444617 and preceding 81444619. In scientific notation, it is written as 8.1444618 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 12 positive divisors. There are 27148200 positive integers (up to 81444618) that are relatively prime to 81444618.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-four thousand six hundred eighteen

Notation

Scientific notation 8.1444618 × 10^7
Engineering notation 8.1444618 × 10^6

Prime Factorization of 81444618

Prime Factorization 2 × 3 × 3 × 4524701

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 27148206
Product of the distinct prime numbers

The prime factorization of 81444618 is 2 × 3 × 3 × 4524701. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 5, 7, 21, 765, 830, 8525, 8248, 21389, 69174, 362682, 728002, 5381303, 9341946, 48721492, 76779739, 948857465, 93901635, 6135546393, 9197633655

Basic calculations (n = 81444618)

Multiplication

n×y
n×2 162889236
n×3 244333854
n×4 325778472
n×5 407223090

Division

n÷y
n÷2 40722309
n÷3 27148206
n÷3 20361154.5
n÷5 16288923.6

Exponentiation

ny
n2 6633225801165924
n3 5.402405414837E+23
n4 4.3999684529253E+31
n5 3.5835374986055E+39

Nth Root

y√n
2√n 9024.6671960799
3√n 433.46509379182
4√n 94.998248384272
5√n 38.209598844387

Divisors of 81444618

1, 2, 3, 6, 9, 18, 4524701, 9049402, 13574103, 27148206, 40722309, 81444618

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81444617
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81444618 can be divided by 12 positive divisors. The sum of these divisors (counting 81444618) is 1, the average is 0.083333333333333.

Base conversion 81444618

Base System Value
2 Binary 100110110101011111100001010
3 Ternary 12200020211000100
4 Quaternary 10312223330022
5 Quinary 131322211433
6 Senary 12025350230
8 Octal 466537412
10 Decimal 81444618
12 Duodecimal 23338376
16 Hexadecimal 4dabf0a
20 Vigesimal 1590bai
36 Base36 1chn2i

Cryptographic Hash Functions

md5 d7414273219fc435a7c6ff7fb97fc89d
sha1 27d053c0048e251d095fd50a42f6a575c7c19f3c
sha256 2a3ce952d02a4e712955889fd5379c46e2a390ae55983daeb7a9123f175ef789
sha512 078c51a8f7c84c77005eba9e062d28b2b63975f8ba542d9df82785d7ceaf7739c88217cbff6d3ba5745205477e8e48346b30c6ae3ad7b0c53026b23c2f9c176a
ripemd-160 9f0b436ec95fd1b4849961e1f21c5a0f480275ce

81444618 as geometric shapes

Circle

Radius = n
Diameter 162889236
Circumference 511731627.16645
Area 2.0838893446545E+16

Sphere

Radius = n
Volume 2.2629542883954E+24
Surface area 8.3355573786181E+16
Circumference 511731627.16645

Square

Length = n
Perimeter 325778472
Area 6633225801165924
Diagonal 115180083.3579

Cube

Length = n
Surface area 39799354806995544
Volume 5.402405414837E+23
Space diagonal 141066216.37904

Equilateral Triangle

Length = n
Perimeter 244333854
Area 2.872271026424E+15
Altitude 70533108.189519

Triangular Pyramid

Length = n
Surface area 2.872271026424E+15
Volume 6.3667958392503E+22
Height 38393361.119299