71661389 is an odd 8-digits composite number following 71661388
and preceding 71661390 . In scientific notation, it is written as 7.1661389 × 10^7.
The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors.
There are 71643900 positive integers (up to 71661389) that are relatively prime to 71661389.
71661389 has 4 divisors, whose sum is 71678880
The reverse of 71661389 is 98316617
Previous prime number is 6551
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5
Name
seventy-one million six hundred sixty-one thousand three hundred eighty-nine
Scientific notation
7.1661389 × 10^7
Engineering notation
7.1661389 × 10^6
Prime Factorization
6551 × 10939
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
71661389
Product of the distinct prime numbers
The prime factorization of 71661389 is 6551 × 10939.
Since it has a total of 2 prime factors.
1 , 3 , 59 , 14 , 329 , 457 , 4301 , 7305 , 85638 , 41912 , 106516 , 543403 , 3983740 , 5182847 , 75970519 , 90392667 , 272646533 , 721262479 , 1621090611 , 9158842950
n×2
143322778
n×3
214984167
n×4
286645556
n×5
358306945
n÷2
35830694.5
n÷3
23887129.666667
n÷3
17915347.25
n÷5
14332277.8
n2
5135354673409321
n3
3.6800664890415E+23
n4
2.6371867621707E+31
n5
1.8898446642956E+39
2 √n
8465.3050151781
3 √n
415.36357358239
4 √n
92.007092200428
5 √n
37.244062292283
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
-71661388
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 71661389 can be divided by 4 positive divisors.
The sum of these divisors (counting 71661389) is 1, the average is 0.25.
Base
System
Value
2
Binary
100010001010111011101001101
3
Ternary
11222211202221112
4
Quaternary
10101113131031
5
Quinary
121321131024
6
Senary
11035541405
8
Octal
421273515
10
Decimal
71661389
12
Duodecimal
1bbba865
16
Hexadecimal
445774d
20
Vigesimal
127hd99
36
Base36
16nya5
md5
122758294343c83f7f13a3e58683057e
sha1
16401a65b71e1354727745ee2bc698c208c8b885
sha256
248c7cfe574f965cfe12558f2aef168080a4baae0b67dd1eb5a74b2088dd474c
sha512
ccacbdeb40e79c997c8adbeb9d01f373e8f5014b196f4548715449f29737bbbd277e11631c092084f313b9a91e955e4e83c4ed557ee776078bf3abe3ad00ef0e
ripemd-160
dcd09da1afb5f5f45ddaf6a463727a7344a32110
Diameter
143322778
Circumference
450261786.45688
Area
1.6133192515561E+16
Volume
1.541502646226E+24
Surface area
6.4532770062243E+16
Circumference
450261786.45688
Perimeter
286645556
Area
5135354673409321
Diagonal
101344508.22229
Surface area
30812128040455926
Volume
3.6800664890415E+23
Space diagonal
124121166.68896
Perimeter
214984167
Area
2.2236738023078E+15
Altitude
62060583.344479
Surface area
2.2236738023078E+15
Volume
4.3369999493644E+22
Height
33781502.740765