81444493 (number)

81444493 is an odd 8-digits composite number following 81444492 and preceding 81444494. In scientific notation, it is written as 8.1444493 × 10^7. The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors. There are 75108144 positive integers (up to 81444493) that are relatively prime to 81444493.

Interesting facts

Basic properties

Name

Name eighty-one million four hundred forty-four thousand four hundred ninety-three

Notation

Scientific notation 8.1444493 × 10^7
Engineering notation 8.1444493 × 10^6

Prime Factorization of 81444493

Prime Factorization 13 × 1367 × 4583

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 81444493
Product of the distinct prime numbers

The prime factorization of 81444493 is 13 × 1367 × 4583. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81444493)

Multiplication

n×y
n×2 162888986
n×3 244333479
n×4 325777972
n×5 407222465

Division

n÷y
n÷2 40722246.5
n÷3 27148164.333333
n÷3 20361123.25
n÷5 16288898.6

Exponentiation

ny
n2 6633205440027049
n3 5.4023805402784E+23
n4 4.3999414409604E+31
n5 3.5835099988871E+39

Nth Root

y√n
2√n 9024.6602706141
3√n 433.46487203309
4√n 94.998211933773
5√n 38.209587115674

Divisors of 81444493

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 -81444492
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 81444493 can be divided by 8 positive divisors. The sum of these divisors (counting 81444493) is 1, the average is 0.125.

Base conversion 81444493

Base System Value
2 Binary 100110110101011111010001101
3 Ternary 12200020210211201
4 Quaternary 10312223322031
5 Quinary 131322210433
6 Senary 12025345501
8 Octal 466537215
10 Decimal 81444493
12 Duodecimal 23338291
16 Hexadecimal 4dabe8d
20 Vigesimal 1590b4d
36 Base36 1chmz1

Cryptographic Hash Functions

md5 1201c3e8c6e865d3a6b06d2e62dea3b9
sha1 0edb2389c59e30f78732d6c00818128ed8ebc9f8
sha256 6af6f220b0adfdbfaf9f8234006ddba729c7b863a53d387b5948395080cfbba1
sha512 2642eb1e5ea4004f2e293f4463d008e8bb25080e2709f43c7b8b1052b5cdedb3aa9602029f917c15b8ef0a4272b96936e6cde9cd6e3d1b7a0fee8b4d0b451cda
ripemd-160 28a3f1157973eb16e4cddafa686371f2c48002e4

81444493 as geometric shapes

Circle

Radius = n
Diameter 162888986
Circumference 511730841.76829
Area 2.0838829480141E+16

Sphere

Radius = n
Volume 2.2629438689647E+24
Surface area 8.3355317920563E+16
Circumference 511730841.76829

Square

Length = n
Perimeter 325777972
Area 6633205440027049
Diagonal 115179906.5812

Cube

Length = n
Surface area 39799232640162294
Volume 5.4023805402784E+23
Space diagonal 141065999.87269

Equilateral Triangle

Length = n
Perimeter 244333479
Area 2.8722622097923E+15
Altitude 70532999.936344

Triangular Pyramid

Length = n
Surface area 2.8722622097923E+15
Volume 6.3667665243019E+22
Height 38393302.193734