72181009 is an odd 8-digits composite number following 72181008
and preceding 72181010 . In scientific notation, it is written as 7.2181009 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 72163300 positive integers (up to 72181009) that are relatively prime to 72181009.
72181009 has 4 divisors, whose sum is 72198720
The reverse of 72181009 is 90018127
Previous prime number is 6359
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
seventy-two million one hundred eighty-one thousand nine
Scientific notation
7.2181009 × 10^7
Engineering notation
7.2181009 × 10^6
Prime Factorization
6359 × 11351
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
72181009
Product of the distinct prime numbers
The prime factorization of 72181009 is 6359 × 11351.
Since it has a total of 2 prime factors.
10 , 4 , 12 , 62 , 541 , 579 , 1329 , 2855 , 65149 , 86888 , 286814 , 271124 , 2705125 , 3841623 , 90107938 , 95828640 , 140791208 , 897359587 , 9562765620 , 7864294028
n×2
144362018
n×3
216543027
n×4
288724036
n×5
360905045
n÷2
36090504.5
n÷3
24060336.333333
n÷3
18045252.25
n÷5
14436201.8
n2
5210098060258081
n3
3.7607013497837E+23
n4
2.7145121797505E+31
n5
1.9593622807718E+39
2 √n
8495.9407366106
3 √n
416.36509684398
4 √n
92.173427497358
5 √n
37.297917992802
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
-72181008
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 72181009 can be divided by 4 positive divisors.
The sum of these divisors (counting 72181009) is 1, the average is 0.25.
Base
System
Value
2
Binary
100010011010110010100010001
3
Ternary
12000211011201201
4
Quaternary
10103112110101
5
Quinary
121434243014
6
Senary
11055031201
8
Octal
423262421
10
Decimal
72181009
12
Duodecimal
2020b501
16
Hexadecimal
44d6511
20
Vigesimal
12b2ca9
36
Base36
16z381
md5
1b12ac9b088d542071af8436f307f256
sha1
5e50cf6dae360e0e3dd3d2da0aeb85333b40a1ea
sha256
05339904523e37a5174593b42b5405c29d47fb1dca7834629cc500dba2d6cf07
sha512
d717175339caf0d9a3f6567bcfab88a86ad91484691dfd69ccba6d47557780984fbe17be8bcd07591b3ee76f3a9be409b2a656e5a6ed2b22d5d45fd149e6edf7
ripemd-160
7afd0bc10c785f31fec096b1c13f3ff07328b296
Diameter
144362018
Circumference
453526655.2062
Area
1.6368005790589E+16
Volume
1.5752788977101E+24
Surface area
6.5472023162357E+16
Circumference
453526655.2062
Perimeter
288724036
Area
5210098060258081
Diagonal
102079361.87357
Surface area
31260588361548486
Volume
3.7607013497837E+23
Space diagonal
125021174.92959
Perimeter
216543027
Area
2.2560386381958E+15
Altitude
62510587.464793
Surface area
2.2560386381958E+15
Volume
4.4320290440824E+22
Height
34026453.957858