81444478 is an even 8-digits composite number following 81444477
and preceding 81444479 . In scientific notation, it is written as 8.1444478 × 10^7.
The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors.
There are 40360320 positive integers (up to 81444478) that are relatively prime to 81444478.
81444478 has 16 divisors, whose sum is 123258816
The reverse of 81444478 is 87444418
Previous prime number is 463
Is Prime? no
Number parity even
Number length 8
Sum of Digits 40
Digital Root 4
Name
eighty-one million four hundred forty-four thousand four hundred seventy-eight
Scientific notation
8.1444478 × 10^7
Engineering notation
8.1444478 × 10^6
Prime Factorization
2 × 281 × 463 × 313
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
81444478
Product of the distinct prime numbers
The prime factorization of 81444478 is 2 × 281 × 463 × 313.
Since it has a total of 4 prime factors.
7 , 2 , 3 , 2 , 12 , 175 , 6053 , 4963 , 73428 , 97196 , 133128 , 469436 , 8939594 , 8234080 , 36751168 , 27470809 , 680745332 , 249521200 , 1642545559 , 3790357298
n×2
162888956
n×3
244333434
n×4
325777912
n×5
407222390
n÷2
40722239
n÷3
27148159.333333
n÷3
20361119.5
n÷5
16288895.6
n2
6633202996692484
n3
5.4023775553366E+23
n4
4.399938199533E+31
n5
3.5835066989323E+39
2 √n
9024.6594395578
3 √n
433.46484542203
4 √n
94.99820755971
5 √n
38.209585708227
1 , 2 , 281 , 313 , 463 , 562 , 626 , 926 , 87953 , 130103 , 144919 , 175906 , 260206 , 289838 , 40722239 , 81444478
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81444477
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81444478 can be divided by 16 positive divisors.
The sum of these divisors (counting 81444478) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110110101011111001111110
3
Ternary
12200020210211011
4
Quaternary
10312223321332
5
Quinary
131322210403
6
Senary
12025345434
8
Octal
466537176
10
Decimal
81444478
12
Duodecimal
2333827a
16
Hexadecimal
4dabe7e
20
Vigesimal
1590b3i
36
Base36
1chmym
md5
5535d5e75bedf370641e3d4ce49f1513
sha1
b73f3af5915ef26c682fe8377b501ce97fed8256
sha256
3b571dc2908bfdd2674baefaec6d55e2a33b87e4b7c5593285a89e6b4974d428
sha512
281cb5637feb06c6b302cd999521c5b1e9e81605437e80ffef51b6a83a7f78e737af68a1b11d9cffacdf7637807090269928ef7ed2ee3cb852014819228240e3
ripemd-160
8d72aa077229dc599498579ed54c40bfaa7cf528
Diameter
162888956
Circumference
511730747.52051
Area
2.0838821804179E+16
Volume
2.2629426186352E+24
Surface area
8.3355287216716E+16
Circumference
511730747.52051
Perimeter
325777912
Area
6633202996692484
Diagonal
115179885.368
Surface area
39799217980154904
Volume
5.4023775553366E+23
Space diagonal
141065973.89193
Perimeter
244333434
Area
2.8722611517974E+15
Altitude
70532986.945963
Surface area
2.8722611517974E+15
Volume
6.3667630065141E+22
Height
38393295.122666