81282249 is an odd 8-digits composite number following 81282248
and preceding 81282250 . In scientific notation, it is written as 8.1282249 × 10^7.
The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors.
There are 54188160 positive integers (up to 81282249) that are relatively prime to 81282249.
81282249 has 4 divisors, whose sum is 90313620
The reverse of 81282249 is 94228218
Previous prime number is 9
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
eighty-one million two hundred eighty-two thousand two hundred forty-nine
Scientific notation
8.1282249 × 10^7
Engineering notation
8.1282249 × 10^6
Prime Factorization
9 × 9031361
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
81282249
Product of the distinct prime numbers
The prime factorization of 81282249 is 9 × 9031361.
Since it has a total of 2 prime factors.
6 , 8 , 63 , 70 , 586 , 283 , 2523 , 8389 , 800 , 57428 , 365161 , 157369 , 9492472 , 5341273 , 83408279 , 9777028 , 599357254 , 156427524 , 2138672940 , 1561148544
n×2
162564498
n×3
243846747
n×4
325128996
n×5
406411245
n÷2
40641124.5
n÷3
27094083
n÷3
20320562.25
n÷5
16256449.8
n2
6606804002498001
n3
5.3701588802524E+23
n4
4.3649859127424E+31
n5
3.5479587184102E+39
2 √n
9015.6668638543
3 √n
433.1768483623
4 √n
94.950865524514
5 √n
38.194351654762
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81282248
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81282249 can be divided by 4 positive divisors.
The sum of these divisors (counting 81282249) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110110000100010011001001
3
Ternary
12122221120021200
4
Quaternary
10312010103021
5
Quinary
131302012444
6
Senary
12022054413
8
Octal
466042311
10
Decimal
81282249
12
Duodecimal
2327a409
16
Hexadecimal
4d844c9
20
Vigesimal
15805c9
36
Base36
1ce5s9
md5
a314500280b3698b8dc4a5cf7aede3f2
sha1
fd842222010cc8bb874a8cdbe2f1af4e71e7ab2a
sha256
ba0936775285cf4646701519c381243e846525126ad56c57ce88db5e6e675c82
sha512
8efc8e9a89d2f75f064fa2f663a048f4efa7f037ddf73f3c4b508b75541201562dc81848363842bd268c4b2b0dfd40125900385cbacb92e63122b3e6ccde8354
ripemd-160
4b38d29e0a441ec5ec5e7fa7debcc40bbc13b693
Diameter
162564498
Circumference
510711432.65131
Area
2.0755886917955E+16
Volume
2.2494468915748E+24
Surface area
8.3023547671821E+16
Circumference
510711432.65131
Perimeter
325128996
Area
6606804002498001
Diagonal
114950458.91599
Surface area
39640824014988006
Volume
5.3701588802524E+23
Space diagonal
140784985.02146
Perimeter
243846747
Area
2.860830051994E+15
Altitude
70392492.510732
Surface area
2.860830051994E+15
Volume
6.3287929337927E+22
Height
38316819.638662