81001330 is an even 8-digits composite number following 81001329
and preceding 81001331 . In scientific notation, it is written as 8.1001330 × 10^7.
The sum of its digits is 16. It has a total of 3 prime factors and 8 positive divisors.
There are 32400528 positive integers (up to 81001330) that are relatively prime to 81001330.
81001330 has 8 divisors, whose sum is 145802412
The reverse of 81001330 is 03310018
Previous prime number is 5
Is Prime? no
Number parity even
Number length 8
Sum of Digits 16
Digital Root 7
Name
eighty-one million one thousand three hundred thirty
Scientific notation
8.1001330 × 10^7
Engineering notation
8.1001330 × 10^6
Prime Factorization
2 × 5 × 8100133
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81001330
Product of the distinct prime numbers
The prime factorization of 81001330 is 2 × 5 × 8100133.
Since it has a total of 3 prime factors.
10 , 10 , 17 , 16 , 396 , 904 , 6295 , 7978 , 21112 , 35226 , 456779 , 12109 , 1854761 , 900798 , 34959131 , 85896996 , 258110751 , 43252357 , 5367198392 , 8944850464
n×2
162002660
n×3
243003990
n×4
324005320
n×5
405006650
n÷2
40500665
n÷3
27000443.333333
n÷3
20250332.5
n÷5
16200266
n2
6561215461768900
n3
5.3146717881985E+23
n4
4.3049548335755E+31
n5
3.4870706710955E+39
2 √n
9000.0738885856
3 √n
432.67723921744
4 √n
94.868719231291
5 √n
38.167914436493
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
-81001329
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 81001330 can be divided by 8 positive divisors.
The sum of these divisors (counting 81001330) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110100111111101101110010
3
Ternary
12122102021221021
4
Quaternary
10310333231302
5
Quinary
131214020310
6
Senary
12012050054
8
Octal
464775562
10
Decimal
81001330
12
Duodecimal
2316392a
16
Hexadecimal
4d3fb72
20
Vigesimal
156536a
36
Base36
1c850y
md5
6ce2237abe17d60347dd44cfc35ebd96
sha1
f09292785a3319822862b6d0ab305377315cc8c0
sha256
9b33cccbc6b3e3fbd925eeaf4903adb5741e4816fdb693969c4cba5b2b43e003
sha512
28746dabb84834b9c8fb2605b8b5145fb8e20e43caca6582ade28d8797f9c106f8771dac1dd46aec209a67840016c6131143f0b1b38ba424174d5d43c99c81d0
ripemd-160
e119eb5614b5f782e3e2ad60a788b69f6be23ec2
Diameter
162002660
Circumference
508946366.51801
Area
2.0612666293313E+16
Volume
2.226204512806E+24
Surface area
8.2450665173252E+16
Circumference
508946366.51801
Perimeter
324005320
Area
6561215461768900
Diagonal
114553179.45626
Surface area
39367292770613400
Volume
5.3146717881985E+23
Space diagonal
140298419.04065
Perimeter
243003990
Area
2.8410896347976E+15
Altitude
70149209.520327
Surface area
2.8410896347976E+15
Volume
6.2634007686933E+22
Height
38184393.152086