81489478 is an even 8-digits composite number following 81489477
and preceding 81489479 . In scientific notation, it is written as 8.1489478 × 10^7.
The sum of its digits is 49. It has a total of 3 prime factors and 8 positive divisors.
There are 33719616 positive integers (up to 81489478) that are relatively prime to 81489478.
81489478 has 8 divisors, whose sum is 122836968
The reverse of 81489478 is 87498418
Previous prime number is 203
Is Prime? no
Number parity even
Number length 8
Sum of Digits 49
Digital Root 4
Name
eighty-one million four hundred eighty-nine thousand four hundred seventy-eight
Scientific notation
8.1489478 × 10^7
Engineering notation
8.1489478 × 10^6
Prime Factorization
2 × 203 × 200713
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
81489478
Product of the distinct prime numbers
The prime factorization of 81489478 is 2 × 203 × 200713.
Since it has a total of 3 prime factors.
2 , 6 , 53 , 33 , 770 , 602 , 9904 , 9209 , 84903 , 82465 , 919618 , 425854 , 9608135 , 6687320 , 36597509 , 61425279 , 43040923 , 4775883 , 5868226781 , 2897568672
n×2
162978956
n×3
244468434
n×4
325957912
n×5
407447390
n÷2
40744739
n÷3
27163159.333333
n÷3
20372369.5
n÷5
16297895.6
n2
6640535024712484
n3
5.4113373280454E+23
n4
4.4096705414433E+31
n5
3.5934175057419E+39
2 √n
9027.1522641418
3 √n
433.54466391569
4 √n
95.011327030738
5 √n
38.213807115288
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
-81489477
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 81489478 can be divided by 8 positive divisors.
The sum of these divisors (counting 81489478) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110110110110111001000110
3
Ternary
12200100002112211
4
Quaternary
10312312321012
5
Quinary
131330130403
6
Senary
12030334034
8
Octal
466667106
10
Decimal
81489478
12
Duodecimal
2335a31a
16
Hexadecimal
4db6e46
20
Vigesimal
15963di
36
Base36
1cilom
md5
ab93aadcd6d97e7f553b2f5f2f88fd28
sha1
0b1002d44e63cd6b1b6d7788af25d0fd42ecd36a
sha256
d15ac483eb2d3fb44ec3210797799b576dab0b17d39d4fa82c45464953a5ef90
sha512
f5f0f1560688a338e3f1175c00e7297c97fe76b962889785d27ab837c74a3ff3accb2b2e66b10928447309289022f7a23f52004da6f3e485e8a761608e37d3a7
ripemd-160
f505476d22dd2380d1c32ff69dd93e4390648aed
Diameter
162978956
Circumference
512013490.85933
Area
2.0861856049542E+16
Volume
2.2666956794511E+24
Surface area
8.344742419817E+16
Circumference
512013490.85933
Perimeter
325957912
Area
6640535024712484
Diagonal
115243524.9783
Surface area
39843210148274904
Volume
5.4113373280454E+23
Space diagonal
141143916.17827
Perimeter
244468434
Area
2.8754360130607E+15
Altitude
70571958.089133
Surface area
2.8754360130607E+15
Volume
6.3773221999146E+22
Height
38414508.326101