81750448 is an even 8-digits composite number following 81750447
and preceding 81750449 . In scientific notation, it is written as 8.1750448 × 10^7.
The sum of its digits is 37. It has a total of 6 prime factors and 20 positive divisors.
There are 37730880 positive integers (up to 81750448) that are relatively prime to 81750448.
81750448 has 20 divisors, whose sum is 170575888
The reverse of 81750448 is 84405718
Previous prime number is 13
Is Prime? no
Number parity even
Number length 8
Sum of Digits 37
Digital Root 1
Name
eighty-one million seven hundred fifty thousand four hundred forty-eight
Scientific notation
8.1750448 × 10^7
Engineering notation
8.1750448 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 13 × 393031
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
10218806
Product of the distinct prime numbers
The prime factorization of 81750448 is 2 × 2 × 2 × 2 × 13 × 393031.
Since it has a total of 6 prime factors.
4 , 10 , 88 , 76 , 786 , 642 , 747 , 1317 , 58485 , 42730 , 272395 , 207347 , 3402375 , 3093984 , 97129000 , 48593317 , 129755629 , 523133494 , 4418813735 , 7936793115
n×2
163500896
n×3
245251344
n×4
327001792
n×5
408752240
n÷2
40875224
n÷3
27250149.333333
n÷3
20437612
n÷5
16350089.6
n2
6683135748200704
n3
5.4634934146022E+23
n4
4.4664303428878E+31
n5
3.6513268149187E+39
2 √n
9041.5954344352
3 √n
434.00697957869
4 √n
95.087304275782
5 √n
38.238251760187
1 , 2 , 4 , 8 , 13 , 16 , 26 , 52 , 104 , 208 , 393031 , 786062 , 1572124 , 3144248 , 5109403 , 6288496 , 10218806 , 20437612 , 40875224 , 81750448
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-81750447
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81750448 can be divided by 20 positive divisors.
The sum of these divisors (counting 81750448) is 1, the average is 0.05.
Base
System
Value
2
Binary
100110111110110100110110000
3
Ternary
12200211100112101
4
Quaternary
10313312212300
5
Quinary
131412003243
6
Senary
12040110144
8
Octal
467664660
10
Decimal
81750448
12
Duodecimal
23465354
16
Hexadecimal
4df69b0
20
Vigesimal
15aig28
36
Base36
1co71s
md5
1c2b1d8e9e753137ec52d405c7dae80f
sha1
5999ec4fbf5f639405f8f046a3dcb84393bfa210
sha256
85e9bc4a19e459b5ea6bc139f0134c8ee02a5f5c321d0927b899e989128431dd
sha512
bdd472b7700a4363728a5862882f4f50455380135550f29209666765272e769ffa681d508bb689e45ae6f0f33d8dd5c2f5e3e02e252f68fc0c8ccd6f7aec7405
ripemd-160
f4e9f7618e2cd8c0862dd64f28dc123c76d2f711
Diameter
163500896
Circumference
513653213.72895
Area
2.0995690169491E+16
Volume
2.2885427699001E+24
Surface area
8.3982760677963E+16
Circumference
513653213.72895
Perimeter
327001792
Area
6683135748200704
Diagonal
115612592.29168
Surface area
40098814489204224
Volume
5.4634934146022E+23
Space diagonal
141595929.47752
Perimeter
245251344
Area
2.8938826674409E+15
Altitude
70797964.738759
Surface area
2.8938826674409E+15
Volume
6.4387887373888E+22
Height
38537530.763892