81444144 (number)

81444144 is an even 8-digits composite number following 81444143 and preceding 81444145. In scientific notation, it is written as 8.1444144 × 10^7. The sum of its digits is 30. It has a total of 7 prime factors and 40 positive divisors. There are 25550848 positive integers (up to 81444144) that are relatively prime to 81444144.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 8.1444144 × 10^7
Engineering notation 8.1444144 × 10^6

Prime Factorization of 81444144

Prime Factorization 2 × 2 × 2 × 2 × 3 × 17 × 99809

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 10180518
Product of the distinct prime numbers

The prime factorization of 81444144 is 2 × 2 × 2 × 2 × 3 × 17 × 99809. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 81444144)

Multiplication

n×y
n×2 162888288
n×3 244332432
n×4 325776576
n×5 407220720

Division

n÷y
n÷2 40722072
n÷3 27148048
n÷3 20361036
n÷5 16288828.8

Exponentiation

ny
n2 6633148591892736
n3 5.4023110909151E+23
n4 4.3998660242129E+31
n5 3.583433220567E+39

Nth Root

y√n
2√n 9024.6409346854
3√n 433.46425288152
4√n 94.998110163758
5√n 38.209554369031

Divisors of 81444144

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81444143
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81444144 can be divided by 40 positive divisors. The sum of these divisors (counting 81444144) is 1, the average is 0.025.

Base conversion 81444144

Base System Value
2 Binary 100110110101011110100110000
3 Ternary 12200020210100210
4 Quaternary 10312223310300
5 Quinary 131322203034
6 Senary 12025344120
8 Octal 466536460
10 Decimal 81444144
12 Duodecimal 23338040
16 Hexadecimal 4dabd30
20 Vigesimal 1590a74
36 Base36 1chmpc

Cryptographic Hash Functions

md5 b50008045c87b1e3e26354bc16f510ba
sha1 bba31ec408ee5fd3db72d6dc4f6269c8b651347f
sha256 d118897e202c246b08d389e5a8f7b85a90303c6a47a7dc6cedb9d167aa554397
sha512 0c491081f5b66a28504bb9fbd684b7392608d8f3f2e98aaedcb0756af61fed1851ebc3563fa50dc935d2381fb33392ff41458c41a948113cf73c1c6da0752269
ripemd-160 c77ec35959a17e403cbe3906efe0be1a1af0e6a6

81444144 as geometric shapes

Circle

Radius = n
Diameter 162888288
Circumference 511728648.93662
Area 2.083865088646E+16

Sphere

Radius = n
Volume 2.2629147780834E+24
Surface area 8.3354603545839E+16
Circumference 511728648.93662

Square

Length = n
Perimeter 325776576
Area 6633148591892736
Diagonal 115179413.02067

Cube

Length = n
Surface area 39798891551356416
Volume 5.4023110909151E+23
Space diagonal 141065395.38696

Equilateral Triangle

Length = n
Perimeter 244332432
Area 2.872237593828E+15
Altitude 70532697.693478

Triangular Pyramid

Length = n
Surface area 2.872237593828E+15
Volume 6.3666846774423E+22
Height 38393137.673556