71289721 is an odd 8-digits composite number following 71289720
and preceding 71289722 . In scientific notation, it is written as 7.1289721 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 67096192 positive integers (up to 71289721) that are relatively prime to 71289721.
71289721 has 4 divisors, whose sum is 75483252
The reverse of 71289721 is 12798217
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
seventy-one million two hundred eighty-nine thousand seven hundred twenty-one
Scientific notation
7.1289721 × 10^7
Engineering notation
7.1289721 × 10^6
Prime Factorization
17 × 4193513
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
71289721
Product of the distinct prime numbers
The prime factorization of 71289721 is 17 × 4193513.
Since it has a total of 2 prime factors.
7 , 5 , 23 , 61 , 392 , 15 , 2201 , 9080 , 51 , 68702 , 880033 , 38965 , 2181685 , 5699362 , 83684630 , 72702682 , 127909048 , 598282444 , 4134083854 , 154497383
n×2
142579442
n×3
213869163
n×4
285158884
n×5
356448605
n÷2
35644860.5
n÷3
23763240.333333
n÷3
17822430.25
n÷5
14257944.2
n2
5082224320257841
n3
3.623103538506E+23
n4
2.582900404142E+31
n5
1.8413424918207E+39
2 √n
8443.3240492119
3 √n
414.64424149166
4 √n
91.887561994058
5 √n
37.205349023585
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
-71289720
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 71289721 can be divided by 4 positive divisors.
The sum of these divisors (counting 71289721) is 1, the average is 0.25.
Base
System
Value
2
Binary
100001111111100101101111001
3
Ternary
11222010220010001
4
Quaternary
10033330231321
5
Quinary
121222232341
6
Senary
11023553001
8
Octal
417745571
10
Decimal
71289721
12
Duodecimal
1ba5b761
16
Hexadecimal
43fcb79
20
Vigesimal
125b461
36
Base36
16fzi1
md5
5e46edf95571e5eded1451a6f8626152
sha1
05287cd4f9e7fa291463773db84279ca62c28e90
sha256
fd5972d60b98b2063ee511a8e215533535f87f4f4ae9b5b0be840f8a2db58e85
sha512
4f491ef72d38a1c806ba94f28b5c6dd67eadc6bb79c1c311669796a936d1e920e4cfb27771f08cdd8590efb62a6a071ae44849190c9116e2278ae14204d914a1
ripemd-160
380edf7d7f5e009ad7b2e39f6ca1bddd037c9a70
Diameter
142579442
Circumference
447926527.54013
Area
1.5966278588417E+16
Volume
1.5176420613021E+24
Surface area
6.386511435367E+16
Circumference
447926527.54013
Perimeter
285158884
Area
5082224320257841
Diagonal
100818890.29599
Surface area
30493345921547046
Volume
3.623103538506E+23
Space diagonal
123477418.82941
Perimeter
213869163
Area
2.2006676845372E+15
Altitude
61738709.414705
Surface area
2.2006676845372E+15
Volume
4.2698684683642E+22
Height
33606296.765331