71388981 is an odd 8-digits composite number following 71388980
and preceding 71388982 . In scientific notation, it is written as 7.1388981 × 10^7.
The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors.
There are 45951360 positive integers (up to 71388981) that are relatively prime to 71388981.
71388981 has 8 divisors, whose sum is 82056600
The reverse of 71388981 is 18988317
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
seventy-one million three hundred eighty-eight thousand nine hundred eighty-one
Scientific notation
7.1388981 × 10^7
Engineering notation
7.1388981 × 10^6
Prime Factorization
9 × 29 × 273521
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
71388981
Product of the distinct prime numbers
The prime factorization of 71388981 is 9 × 29 × 273521.
Since it has a total of 3 prime factors.
8 , 4 , 5 , 18 , 34 , 276 , 6691 , 983 , 46048 , 13953 , 530447 , 827943 , 5797815 , 9156183 , 67222978 , 64345363 , 900187086 , 741994584 , 7774403347 , 421967107
n×2
142777962
n×3
214166943
n×4
285555924
n×5
356944905
n÷2
35694490.5
n÷3
23796327
n÷3
17847245.25
n÷5
14277796.2
n2
5096386608218361
n3
3.6382584674276E+23
n4
2.5973156460427E+31
n5
1.8541971730635E+39
2 √n
8449.2000213038
3 √n
414.836595077
4 √n
91.919530140791
5 √n
37.215703806386
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
-71388980
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 71388981 can be divided by 8 positive divisors.
The sum of these divisors (counting 71388981) is 1, the average is 0.125.
Base
System
Value
2
Binary
100010000010100111100110101
3
Ternary
11222022221021100
4
Quaternary
10100110330311
5
Quinary
121233421411
6
Senary
11030040313
8
Octal
420247465
10
Decimal
71388981
12
Duodecimal
1baa9099
16
Hexadecimal
4414f35
20
Vigesimal
1263c91
36
Base36
16i439
md5
30b842707a97bb870de3eeb96c88eb8a
sha1
9468c9d0455fc2322a83e28a48c80c3dad05f9cf
sha256
e5170128fdb5119251663be50e442e9c573a3bfd24275d51091d723d6b361ce4
sha512
8d0bb2be071c95a63a762c581489d991a333031c36c33ca8798533c5560f2d2751d28e7439c670c490c59c6c43b2ce861e6a85ca275a66bc40f36cbfd4b21b80
ripemd-160
93abe515cdb622dc035c24252439a118dca8e6ab
Diameter
142777962
Circumference
448550196.51372
Area
1.6010770728232E+16
Volume
1.5239901430842E+24
Surface area
6.4043082912929E+16
Circumference
448550196.51372
Perimeter
285555924
Area
5096386608218361
Diagonal
100959265.1342
Surface area
30578319649310166
Volume
3.6382584674276E+23
Space diagonal
123649342.19257
Perimeter
214166943
Area
2.206800135112E+15
Altitude
61824671.096285
Surface area
2.206800135112E+15
Volume
4.287728723379E+22
Height
33653088.378065