81489428 is an even 8-digits composite number following 81489427
and preceding 81489429 . In scientific notation, it is written as 8.1489428 × 10^7.
The sum of its digits is 44. It has a total of 4 prime factors and 12 positive divisors.
There are 40707072 positive integers (up to 81489428) that are relatively prime to 81489428.
81489428 has 12 divisors, whose sum is 142738260
The reverse of 81489428 is 82498418
Previous prime number is 17669
Is Prime? no Number parity even Number length 8 Sum of Digits 44 Digital Root 8
Name
eighty-one million four hundred eighty-nine thousand four hundred twenty-eight
Scientific notation
8.1489428 × 10^7
Engineering notation
8.1489428 × 10^6
Prime Factorization
2 × 2 × 17669 × 1153
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
40744714 Product of the distinct prime numbers
The prime factorization of 81489428 is 2 × 2 × 17669 × 1153.
Since it has a total of 4 prime factors.
7 , 9 , 7 , 3 , 436 , 927 , 5968 , 1459 , 31896 , 79020 , 724134 , 340315 , 4182796 , 7827602 , 22010275 , 28548645 , 42821707 , 724041670 , 5991768932 , 6797437985
n×2
162978856
n×3
244468284
n×4
325957712
n×5
407447140
n÷2
40744714
n÷3
27163142.666667
n÷3
20372357
n÷5
16297885.6
n2
6640526875767184
n3
5.4113273672489E+23
n4
4.4096597187786E+31
n5
3.5934064815791E+39
2 √n9027.1494947187
3 √n433.54457524478
4 √n95.011312456563
5 √n38.21380242587
1 , 2 , 4 , 1153 , 2306 , 4612 , 17669 , 35338 , 70676 , 20372357 , 40744714 , 81489428
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
-81489427 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 81489428 can be divided by 12 positive divisors.
The sum of these divisors (counting 81489428) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100110110110110111000010100
3
Ternary
12200100002110222
4
Quaternary
10312312320110
5
Quinary
131330130203
6
Senary
12030333512
8
Octal
466667024
10
Decimal
81489428
12
Duodecimal
2335a298
16
Hexadecimal
4db6e14
20
Vigesimal
15963b8
36
Base36
1ciln8
md5
88e6731313175c01d6372a89b9919587
sha1
045abe04e34af16e2def9e8555fc34ab553594f0
sha256
5ac81ee446e61fa95c55b3a65053a36bd6b3a818bd9ec74727b0e50b877e8718
sha512
f25c3e46a212f3954901db00eb07108d71dc4f2146167016056e9e919b904c8a8cf75ff1a22f264787534feb1bdbe79f7b0b2958e685d839d855f006b35d1fea
ripemd-160
c473891fb308171f7c62b3cd04a7c8e77acee943
Diameter
162978856
Circumference
512013176.70007
Area
2.0861830448876E+16
Volume
2.2666915070825E+24
Surface area
8.3447321795503E+16
Circumference
512013176.70007
Perimeter
325957712
Area
6640526875767184
Diagonal
115243454.26763
Surface area
39843161254603104
Volume
5.4113273672489E+23
Space diagonal
141143829.57573
Perimeter
244468284
Area
2.8754324844638E+15
Altitude
70571914.787863
Surface area
2.8754324844638E+15
Volume
6.3773104610035E+22
Height
38414484.755875