71640987 is an odd 8-digits composite number following 71640986
and preceding 71640988 . In scientific notation, it is written as 7.1640987 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 43418760 positive integers (up to 71640987) that are relatively prime to 71640987.
71640987 has 8 divisors, whose sum is 104205120
The reverse of 71640987 is 78904617
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
seventy-one million six hundred forty thousand nine hundred eighty-seven
Scientific notation
7.1640987 × 10^7
Engineering notation
7.1640987 × 10^6
Prime Factorization
3 × 11 × 2170939
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
71640987
Product of the distinct prime numbers
The prime factorization of 71640987 is 3 × 11 × 2170939.
Since it has a total of 3 prime factors.
10 , 3 , 12 , 53 , 242 , 206 , 9207 , 148 , 81103 , 56130 , 670628 , 107045 , 1748814 , 4920769 , 76637977 , 83911770 , 622721838 , 14250370 , 291310748 , 5025581714
n×2
143281974
n×3
214922961
n×4
286563948
n×5
358204935
n÷2
35820493.5
n÷3
23880329
n÷3
17910246.75
n÷5
14328197.4
n2
5132431018334169
n3
3.6769242386287E+23
n4
2.6341848157959E+31
n5
1.8871560014403E+39
2 √n
8464.0998930778
3 √n
415.32415183297
4 √n
92.00054289556
5 √n
37.241941373567
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-71640986
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 71640987 can be divided by 8 positive divisors.
The sum of these divisors (counting 71640987) is 1, the average is 0.125.
Base
System
Value
2
Binary
100010001010010011110011011
3
Ternary
11222210201221220
4
Quaternary
10101102132123
5
Quinary
121320002422
6
Senary
11035303123
8
Octal
421223633
10
Decimal
71640987
12
Duodecimal
1bbaaaa3
16
Hexadecimal
445279b
20
Vigesimal
127f297
36
Base36
16nijf
md5
1c661a0d381e9cf9242aa6ab0218ca0e
sha1
ecfe247ff1952121560895d4990b01b2860b145a
sha256
85910ea74853b05839d12e47b739e43fd85dba1e3910d23f4496b7dfe3e49953
sha512
71e0af42cf611fa3b8f57f4d9d1baf1bdb0d8c91fce08aee1cf55e4ac0a2cd5864897d15fc1a25735fc65bd63eed531cccc4608e8435a24457b1e0898be163e8
ripemd-160
1ea6a670bf8f9df1900385e14bfcdfee1c434129
Diameter
143281974
Circumference
450133596.91024
Area
1.6124007582255E+16
Volume
1.540186423451E+24
Surface area
6.449603032902E+16
Circumference
450133596.91024
Perimeter
286563948
Area
5132431018334169
Diagonal
101315655.43719
Surface area
30794586110005014
Volume
3.6769242386287E+23
Space diagonal
124085829.38838
Perimeter
214922961
Area
2.2224078225243E+15
Altitude
62042914.694191
Surface area
2.2224078225243E+15
Volume
4.3332967717393E+22
Height
33771885.145732