81371489 is an odd 8-digits prime number following 81371488
and preceding 81371490 . In scientific notation, it is written as 8.1371489 × 10^7.
The sum of its digits is 41. It has a total of 1 prime factors and 2 positive divisors.
There are 81371488 positive integers (up to 81371489) that are relatively prime to 81371489.
81371489 has 2 divisors, whose sum is 81371490
The reverse of 81371489 is 98417318
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 41 Digital Root 5
Name
eighty-one million three hundred seventy-one thousand four hundred eighty-nine
Scientific notation
8.1371489 × 10^7
Engineering notation
8.1371489 × 10^6
Prime Factorization
81371489
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
81371489 Product of the distinct prime numbers
The prime factorization of 81371489 is 81371489.
Since it has a total of 1 prime factors.
6 , 7 , 67 , 46 , 280 , 484 , 5854 , 9922 , 23541 , 95738 , 873444 , 68175 , 3268855 , 4922754 , 46635737 , 24479556 , 358218655 , 687558986 , 9744407603 , 2302528976
n×2
162742978
n×3
244114467
n×4
325485956
n×5
406857445
n÷2
40685744.5
n÷3
27123829.666667
n÷3
20342872.25
n÷5
16274297.8
n2
6621319222077121
n3
5.3878660424474E+23
n4
4.3841868240648E+31
n5
3.5674780992833E+39
2 √n9020.6146686354
3 √n433.3353190573
4 √n94.976916504145
5 √n38.20273471036
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
81371490 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
40685745 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9020.614724064 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999754214 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81371489 can be divided by 2 positive divisors.
The sum of these divisors (counting 81371489) is 81371490, the average is 40685745.
Base
System
Value
2
Binary
100110110011010000101100001
3
Ternary
12200010002200212
4
Quaternary
10312122011201
5
Quinary
131312341424
6
Senary
12024023505
8
Octal
466320541
10
Decimal
81371489
12
Duodecimal
23301b95
16
Hexadecimal
4d9a161
20
Vigesimal
158b8e9
36
Base36
1cg2n5
md5
3678b884487fd7d6a08814e20cc1d029
sha1
52646b3de43929dd738fc6ae77a08fbac2403293
sha256
b4fec19eb7f0a87372c979ca7a9efe35ffe1e9cfdb82aa48b347cc18ed352368
sha512
fe730ce4da92d46204431eaa6f2f36f92beafd0df57c8a14dfe80d559611155d1cd8792faa865f371c9613bd504e4049f1cf64f7ccb5d299fbef6ed03bf782a5
ripemd-160
b52e320aa63614ad62e05705f4fa4967a78fd4ef
Diameter
162742978
Circumference
511272144.10813
Area
2.080148782515E+16
Volume
2.2568640503305E+24
Surface area
8.3205951300601E+16
Circumference
511272144.10813
Perimeter
325485956
Area
6621319222077121
Diagonal
115076663.33429
Surface area
39727915332462726
Volume
5.3878660424474E+23
Space diagonal
140939553.23553
Perimeter
244114467
Area
2.8671153264425E+15
Altitude
70469776.617766
Surface area
2.8671153264425E+15
Volume
6.3496610245654E+22
Height
38358887.778098