81465239 is an odd 8-digits prime number following 81465238
and preceding 81465240 . In scientific notation, it is written as 8.1465239 × 10^7.
The sum of its digits is 38. It has a total of 1 prime factors and 2 positive divisors.
There are 81465238 positive integers (up to 81465239) that are relatively prime to 81465239.
81465239 has 2 divisors, whose sum is 81465240
The reverse of 81465239 is 93256418
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
eighty-one million four hundred sixty-five thousand two hundred thirty-nine
Scientific notation
8.1465239 × 10^7
Engineering notation
8.1465239 × 10^6
Prime Factorization
81465239
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
81465239
Product of the distinct prime numbers
The prime factorization of 81465239 is 81465239.
Since it has a total of 1 prime factors.
3 , 5 , 78 , 41 , 473 , 344 , 1366 , 6084 , 2092 , 77173 , 256355 , 220351 , 6769295 , 3819349 , 29831694 , 59661007 , 66742104 , 135453589 , 2551837875 , 8437688210
n×2
162930478
n×3
244395717
n×4
325860956
n×5
407326195
n÷2
40732619.5
n÷3
27155079.666667
n÷3
20366309.75
n÷5
16293047.8
n2
6636585165327121
n3
5.4065099663723E+23
n4
4.404426265664E+31
n5
3.588076383902E+39
2 √n
9025.8096035757
3 √n
433.50167377973
4 √n
95.004260975894
5 √n
38.211533509615
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
81465240
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
40732620
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
9025.8096589724
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999754497
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81465239 can be divided by 2 positive divisors.
The sum of these divisors (counting 81465239) is 81465240, the average is 40732620.
Base
System
Value
2
Binary
100110110110000111110010111
3
Ternary
12200021212022002
4
Quaternary
10312300332113
5
Quinary
131323341424
6
Senary
12030025515
8
Octal
466607627
10
Decimal
81465239
12
Duodecimal
2334829b
16
Hexadecimal
4db0f97
20
Vigesimal
159331j
36
Base36
1ci2zb
md5
09424438b8bd2bbfe578705d185014b9
sha1
1b6b239321bb9f562ac74caeede79c0be389e2d2
sha256
c9987fe20954f6dd818c9805a7c01e3d27c758794973996e07b3d20107c4f969
sha512
75ed3b1dd25cccb4828a925b383d3a0663dbecfc2e8ae71efad64c0f927c0a8a52af983025f74c5e919c711e5e3d20e4eaf98ed3b59063fa912e8db043d760bb
ripemd-160
ffb841d95b90a1775cfa910c64e89b32bb55c79c
Diameter
162930478
Circumference
511861192.73067
Area
2.0849447200315E+16
Volume
2.264673598922E+24
Surface area
8.3397788801259E+16
Circumference
511861192.73067
Perimeter
325860956
Area
6636585165327121
Diagonal
115209245.85577
Surface area
39819510991962726
Volume
5.4065099663723E+23
Space diagonal
141101932.99874
Perimeter
244395717
Area
2.8737256737761E+15
Altitude
70550966.499371
Surface area
2.8737256737761E+15
Volume
6.3716330996242E+22
Height
38403081.951922