71397991 is an odd 8-digits composite number following 71397990
and preceding 71397992 . In scientific notation, it is written as 7.1397991 × 10^7.
The sum of its digits is 46. It has a total of 4 prime factors and 16 positive divisors.
There are 56103840 positive integers (up to 71397991) that are relatively prime to 71397991.
71397991 has 16 divisors, whose sum is 88668160
The reverse of 71397991 is 19979317
Previous prime number is 31
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1
Name
seventy-one million three hundred ninety-seven thousand nine hundred ninety-one
Scientific notation
7.1397991 × 10^7
Engineering notation
7.1397991 × 10^6
Prime Factorization
7 × 19 × 31 × 17317
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
71397991
Product of the distinct prime numbers
The prime factorization of 71397991 is 7 × 19 × 31 × 17317.
Since it has a total of 4 prime factors.
6 , 4 , 70 , 78 , 475 , 217 , 9808 , 6379 , 32273 , 52608 , 282988 , 550798 , 7218003 , 3744603 , 61952025 , 23211333 , 476811006 , 347791074 , 9648504470 , 8907862836
n×2
142795982
n×3
214193973
n×4
285591964
n×5
356989955
n÷2
35698995.5
n÷3
23799330.333333
n÷3
17849497.75
n÷5
14279598.2
n2
5097673118836081
n3
3.639636194596E+23
n4
2.5986271226504E+31
n5
1.8553675591535E+39
2 √n
8449.733191054
3 √n
414.85404651202
4 √n
91.922430293449
5 √n
37.216643157418
1 , 7 , 19 , 31 , 133 , 217 , 589 , 4123 , 17317 , 121219 , 329023 , 536827 , 2303161 , 3757789 , 10199713 , 71397991
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-71397990
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 71397991 can be divided by 16 positive divisors.
The sum of these divisors (counting 71397991) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100010000010111001001100111
3
Ternary
11222100101122001
4
Quaternary
10100113021213
5
Quinary
121234213431
6
Senary
11030150131
8
Octal
420271147
10
Decimal
71397991
12
Duodecimal
1bab2347
16
Hexadecimal
4417267
20
Vigesimal
1264ejb
36
Base36
16ib1j
md5
9d4a037903ad7557c0dd05f4a560c00f
sha1
b2abe9d52040bdf8d1f9ced66922d752b05b1bd5
sha256
ffe1efdb91a05ae13cf0e0ab20b540e129ea9b365066499980912125da02e47f
sha512
2ee0ea3892a2f66ab5c4d7e13397324488d31eb0709f8df34ae794c69a46e69f2fec1f8df1286214578fee71ee15b2ba2c05ae42fa0b3d7aefdd214748e5b7d1
ripemd-160
81d25025113bf303dd85c513cd62fdb397260c10
Diameter
142795982
Circumference
448606808.01334
Area
1.6014812420538E+16
Volume
1.524567244091E+24
Surface area
6.405924968215E+16
Circumference
448606808.01334
Perimeter
285591964
Area
5097673118836081
Diagonal
100972007.19839
Surface area
30586038713016486
Volume
3.639636194596E+23
Space diagonal
123664947.97035
Perimeter
214193973
Area
2.2073572105505E+15
Altitude
61832473.985173
Surface area
2.2073572105505E+15
Volume
4.2893523904181E+22
Height
33657335.732797