81489479 is an odd 8-digits prime number following 81489478
and preceding 81489480 . In scientific notation, it is written as 8.1489479 × 10^7.
The sum of its digits is 50. It has a total of 1 prime factors and 2 positive divisors.
There are 81489478 positive integers (up to 81489479) that are relatively prime to 81489479.
81489479 has 2 divisors, whose sum is 81489480
The reverse of 81489479 is 97498418
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 50
Digital Root 5
Name
eighty-one million four hundred eighty-nine thousand four hundred seventy-nine
Scientific notation
8.1489479 × 10^7
Engineering notation
8.1489479 × 10^6
Prime Factorization
81489479
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
81489479
Product of the distinct prime numbers
The prime factorization of 81489479 is 81489479.
Since it has a total of 1 prime factors.
5 , 8 , 82 , 77 , 167 , 989 , 7133 , 2129 , 39453 , 50728 , 819611 , 558824 , 2394948 , 7849168 , 42198753 , 90786074 , 610084961 , 645159239 , 4792310951 , 457758401
n×2
162978958
n×3
244468437
n×4
325957916
n×5
407447395
n÷2
40744739.5
n÷3
27163159.666667
n÷3
20372369.75
n÷5
16297895.8
n2
6640535187691441
n3
5.4113375272614E+23
n4
4.4096707578968E+31
n5
3.5934177262255E+39
2 √n
9027.1523195302
3 √n
433.5446656891
4 √n
95.011327322221
5 √n
38.213807209076
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
81489480
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
40744740
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
9027.1523749187
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.999999975457
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81489479 can be divided by 2 positive divisors.
The sum of these divisors (counting 81489479) is 81489480, the average is 40744740.
Base
System
Value
2
Binary
100110110110110111001000111
3
Ternary
12200100002112212
4
Quaternary
10312312321013
5
Quinary
131330130404
6
Senary
12030334035
8
Octal
466667107
10
Decimal
81489479
12
Duodecimal
2335a31b
16
Hexadecimal
4db6e47
20
Vigesimal
15963dj
36
Base36
1cilon
md5
196dbe00c7acd9dec919aabb382db92d
sha1
798c7bc33c2158f89a4660cb8aac2d24c2aa4c0c
sha256
75c7a48d8f3e0832a780659a9e4c60fe69f934acbfec9480266b8220cdcd96d9
sha512
de0d5f2d8e4f4033b8dc39c84f3f2e993d82080c8644a2c2cb5e856aedabd285f3361ae171d86d96665939a2944c943b64ec27045018eb9aef3be98c3dad92e1
ripemd-160
46d7c81c50a604ffc299e66bb3acc37999c1da79
Diameter
162978958
Circumference
512013497.14252
Area
2.0861856561556E+16
Volume
2.2666957628986E+24
Surface area
8.3447426246224E+16
Circumference
512013497.14252
Perimeter
325957916
Area
6640535187691441
Diagonal
115243526.39252
Surface area
39843211126148646
Volume
5.4113375272614E+23
Space diagonal
141143917.91032
Perimeter
244468437
Area
2.8754360836326E+15
Altitude
70571958.955159
Surface area
2.8754360836326E+15
Volume
6.377322434693E+22
Height
38414508.797506