81591330 is an even 8-digits composite number following 81591329
and preceding 81591331 . In scientific notation, it is written as 8.1591330 × 10^7.
The sum of its digits is 30. It has a total of 5 prime factors and 32 positive divisors.
There are 20327424 positive integers (up to 81591330) that are relatively prime to 81591330.
81591330 has 32 divisors, whose sum is 139242240
The reverse of 81591330 is 03319518
Previous prime number is 1019
Is Prime? no
Number parity even
Number length 8
Sum of Digits 30
Digital Root 3
Name
eighty-one million five hundred ninety-one thousand three hundred thirty
Scientific notation
8.1591330 × 10^7
Engineering notation
8.1591330 × 10^6
Prime Factorization
2 × 15 × 17 × 1019 × 157
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
81591330
Product of the distinct prime numbers
The prime factorization of 81591330 is 2 × 15 × 17 × 1019 × 157.
Since it has a total of 5 prime factors.
6 , 3 , 29 , 47 , 259 , 335 , 2187 , 9813 , 69788 , 21100 , 835186 , 264837 , 3635606 , 3584884 , 20243934 , 78414222 , 172428884 , 17466080 , 3046996099 , 4023882779
n×2
163182660
n×3
244773990
n×4
326365320
n×5
407956650
n÷2
40795665
n÷3
27197110
n÷3
20397832.5
n÷5
16318266
n2
6657145131168900
n3
5.431653252551E+23
n4
4.4317581297446E+31
n5
3.6159304004417E+39
2 √n
9032.791927195
3 √n
433.72521486051
4 √n
95.041001295204
5 √n
38.223354871262
1 , 2 , 15 , 17 , 30 , 34 , 157 , 255 , 314 , 510 , 1019 , 2038 , 2355 , 2669 , 4710 , 5338 , 15285 , 17323 , 30570 , 34646 , 40035 , 80070 , 159983 , 259845 , 319966 , 519690 , 2399745 , 2719711 , 4799490 , 5439422 , 40795665 , 81591330
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81591329
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81591330 can be divided by 32 positive divisors.
The sum of these divisors (counting 81591330) is 1, the average is 0.03125.
Base
System
Value
2
Binary
100110111001111110000100010
3
Ternary
12200112021021010
4
Quaternary
10313033300202
5
Quinary
131341410310
6
Senary
12032441350
8
Octal
467176042
10
Decimal
81591330
12
Duodecimal
233a9256
16
Hexadecimal
4dcfc22
20
Vigesimal
159ii6a
36
Base36
1cks9u
md5
0e2adf7901ee7bcdf28909b850fefa39
sha1
ab37cc1f205714c5506d2b1f97549906c1088b8f
sha256
54cc987f8f5dd85b8edcabbab9bbc7099f60ece8b391d4d7dd8b1260be23cc6a
sha512
95267a38dd77cfe0d3b2afc8586e09b3394f000c76acd01e158093f063130a78ea3fc9f079afeb22ad9b7f6fa2759f69dc62879697e3019b137c3f9f443f2c4b
ripemd-160
af5ed421b183a5690c1354f817b6de5cdcf06f7e
Diameter
163182660
Circumference
512653445.84924
Area
2.0914038237961E+16
Volume
2.2752055940082E+24
Surface area
8.3656152951845E+16
Circumference
512653445.84924
Perimeter
326365320
Area
6657145131168900
Diagonal
115387565.45806
Surface area
39942870787013400
Volume
5.431653252551E+23
Space diagonal
141320329.01712
Perimeter
244773990
Area
2.8826284001361E+15
Altitude
70660164.508559
Surface area
2.8826284001361E+15
Volume
6.4012647465546E+22
Height
38462521.819353