81207306 is an even 8-digits composite number following 81207305
and preceding 81207307 . In scientific notation, it is written as 8.1207306 × 10^7.
The sum of its digits is 27. It has a total of 5 prime factors and 32 positive divisors.
There are 25764480 positive integers (up to 81207306) that are relatively prime to 81207306.
81207306 has 32 divisors, whose sum is 166837440
The reverse of 81207306 is 60370218
Previous prime number is 43
Is Prime? no
Number parity even
Number length 8
Sum of Digits 27
Digital Root 9
Name
eighty-one million two hundred seven thousand three hundred six
Scientific notation
8.1207306 × 10^7
Engineering notation
8.1207306 × 10^6
Prime Factorization
2 × 3 × 369 × 43 × 853
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
81207306
Product of the distinct prime numbers
The prime factorization of 81207306 is 2 × 3 × 369 × 43 × 853.
Since it has a total of 5 prime factors.
9 , 8 , 34 , 42 , 149 , 137 , 2513 , 8120 , 41722 , 56952 , 165020 , 679925 , 2385224 , 6098102 , 80549589 , 20356264 , 555160896 , 111438785 , 8673436771 , 9641955245
n×2
162414612
n×3
243621918
n×4
324829224
n×5
406036530
n÷2
40603653
n÷3
27069102
n÷3
20301826.5
n÷5
16241461.2
n2
6594626547777636
n3
5.355318560211E+23
n4
4.3489099304654E+31
n5
3.5316325948974E+39
2 √n
9011.5096404543
3 √n
433.04367637908
4 √n
94.928971554812
5 √n
38.187305945325
1 , 2 , 3 , 6 , 43 , 86 , 129 , 258 , 369 , 738 , 853 , 1107 , 1706 , 2214 , 2559 , 5118 , 15867 , 31734 , 36679 , 47601 , 73358 , 95202 , 110037 , 220074 , 314757 , 629514 , 944271 , 1888542 , 13534551 , 27069102 , 40603653 , 81207306
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
-81207305
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 81207306 can be divided by 32 positive divisors.
The sum of these divisors (counting 81207306) is 1, the average is 0.03125.
Base
System
Value
2
Binary
100110101110010000000001010
3
Ternary
12122210202111000
4
Quaternary
10311302000022
5
Quinary
131242113211
6
Senary
12020315430
8
Octal
465620012
10
Decimal
81207306
12
Duodecimal
23242b76
16
Hexadecimal
4d7200a
20
Vigesimal
157ai56
36
Base36
1ccjyi
md5
2014277b2043050f04eec73e4fa29564
sha1
b53cd318083324119e66a9f43fee5cbcf7e16ca4
sha256
54700c1267d8a80a134ca7646d9a9082461ee1138102f64fbb648e7fd20f5f3c
sha512
232238a48bd8bde093c300dff4632629f0b16f63e20d58b2facf45eab32bdeaffb39e61ba1c9887d8d3f32ce750ee94c4acf99cfef6806ce98c3ff4315c31738
ripemd-160
e58650a1d42297d32dd23943b8907d1e9c8aa6ab
Diameter
162414612
Circumference
510240551.89484
Area
2.0717630315666E+16
Volume
2.2432305928523E+24
Surface area
8.2870521262666E+16
Circumference
510240551.89484
Perimeter
324829224
Area
6594626547777636
Diagonal
114844473.50898
Surface area
39567759286665816
Volume
5.355318560211E+23
Space diagonal
140655179.93779
Perimeter
243621918
Area
2.8555570594234E+15
Altitude
70327589.968896
Surface area
2.8555570594234E+15
Volume
6.311303448899E+22
Height
38281491.169661