71387991 is an odd 8-digits composite number following 71387990
and preceding 71387992 . In scientific notation, it is written as 7.1387991 × 10^7.
The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors.
There are 47306016 positive integers (up to 71387991) that are relatively prime to 71387991.
71387991 has 8 divisors, whose sum is 79796640
The reverse of 71387991 is 19978317
Previous prime number is 167
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
seventy-one million three hundred eighty-seven thousand nine hundred ninety-one
Scientific notation
7.1387991 × 10^7
Engineering notation
7.1387991 × 10^6
Prime Factorization
9 × 167 × 47497
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
71387991
Product of the distinct prime numbers
The prime factorization of 71387991 is 9 × 167 × 47497.
Since it has a total of 3 prime factors.
2 , 4 , 1 , 43 , 552 , 541 , 4686 , 9090 , 75675 , 34953 , 63356 , 173533 , 7609731 , 8800374 , 35418015 , 98714780 , 971499266 , 269884909 , 9276001213 , 2425722617
n×2
142775982
n×3
214163973
n×4
285551964
n×5
356939955
n÷2
35693995.5
n÷3
23795997
n÷3
17846997.75
n÷5
14277598.2
n2
5096245259016081
n3
3.6381071068443E+23
n4
2.5971715740044E+31
n5
1.8540686095048E+39
2 √n
8449.1414356726
3 √n
414.8346774602
4 √n
91.91921146133
5 √n
37.215600586672
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
-71387990
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 71387991 can be divided by 8 positive divisors.
The sum of these divisors (counting 71387991) is 1, the average is 0.125.
Base
System
Value
2
Binary
100010000010100101101010111
3
Ternary
11222022212220200
4
Quaternary
10100110231113
5
Quinary
121233403431
6
Senary
11030031543
8
Octal
420245527
10
Decimal
71387991
12
Duodecimal
1baa85b3
16
Hexadecimal
4414b57
20
Vigesimal
12639jb
36
Base36
16i3br
md5
b9ac5b263bc461c1337eaff0fe5817ca
sha1
eed77b9045a83fccc1f8eb9297d283ea4aa98e04
sha256
f5f2715cf89b0963d578b68ea4d3284c360db59347b9d4bc50074de988cc05b0
sha512
ddfb8eb404a7975e0b9d4430ee7eaf86f9ef6606c66a6230159fc5d786443d07a08fbe79a961a16e0defb613c90d3aafc1c1fea7d60bc108118f1420aa12c902
ripemd-160
c1656883fb4f1dae79319f13bd32358c38e431c7
Diameter
142775982
Circumference
448543976.16027
Area
1.6010326666617E+16
Volume
1.5239267413113E+24
Surface area
6.4041306666467E+16
Circumference
448543976.16027
Perimeter
285551964
Area
5096245259016081
Diagonal
100957865.06277
Surface area
30577471554096486
Volume
3.6381071068443E+23
Space diagonal
123647627.46227
Perimeter
214163973
Area
2.206738929112E+15
Altitude
61823813.731135
Surface area
2.206738929112E+15
Volume
4.287550343221E+22
Height
33652621.687589