72131421 is an odd 8-digits composite number following 72131420
and preceding 72131422 . In scientific notation, it is written as 7.2131421 × 10^7.
The sum of its digits is 21. It has a total of 2 prime factors and 4 positive divisors.
There are 48087612 positive integers (up to 72131421) that are relatively prime to 72131421.
72131421 has 4 divisors, whose sum is 96175232
The reverse of 72131421 is 12413127
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
seventy-two million one hundred thirty-one thousand four hundred twenty-one
Scientific notation
7.2131421 × 10^7
Engineering notation
7.2131421 × 10^6
Prime Factorization
3 × 24043807
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
72131421
Product of the distinct prime numbers
The prime factorization of 72131421 is 3 × 24043807.
Since it has a total of 2 prime factors.
7 , 8 , 40 , 61 , 807 , 414 , 839 , 1937 , 60645 , 63340 , 5803 , 315704 , 3798752 , 8049295 , 21413133 , 75309816 , 863895152 , 918765753 , 6425866947 , 4933417108
n×2
144262842
n×3
216394263
n×4
288525684
n×5
360657105
n÷2
36065710.5
n÷3
24043807
n÷3
18032855.25
n÷5
14426284.2
n2
5202941895479241
n3
3.7529559230135E+23
n4
2.7070604367733E+31
n5
1.9526411603734E+39
2 √n
8493.0219003603
3 √n
416.26972807327
4 √n
92.157592743953
5 √n
37.292791886532
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
-72131420
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 72131421 can be divided by 4 positive divisors.
The sum of these divisors (counting 72131421) is 1, the average is 0.25.
Base
System
Value
2
Binary
100010011001010001101011101
3
Ternary
12000201122201010
4
Quaternary
10103022031131
5
Quinary
121431201141
6
Senary
11054005433
8
Octal
423121535
10
Decimal
72131421
12
Duodecimal
201a6879
16
Hexadecimal
44ca35d
20
Vigesimal
12ag8b1
36
Base36
16y0yl
md5
2ef6b19033a53617254f414e766f47b0
sha1
bc1ac2fdf0e73914542cbd20037ad9eb8792fd5e
sha256
ebed6cfa5b9d1e3eb330dd8fec585b89f8fdcda93075fe15ec97fb0e12fb734b
sha512
a3dcf4009564e658f384fc38d9d0dd14a1caa9d71cdbd44b3b75c105e878731c9dc7bde043c355506ead1ce5ae1a38a7b9ad8f20b48a9dfa570b4e8cfa722fb6
ripemd-160
b88e36cfe1048feb915d03aa56b983859ddb6a5a
Diameter
144262842
Circumference
453215084.61319
Area
1.6345524035892E+16
Volume
1.5720345009314E+24
Surface area
6.5382096143569E+16
Circumference
453215084.61319
Perimeter
288525684
Area
5202941895479241
Diagonal
102009233.85144
Surface area
31217651372875446
Volume
3.7529559230135E+23
Space diagonal
124935285.99414
Perimeter
216394263
Area
2.2529399279497E+15
Altitude
62467642.99707
Surface area
2.2529399279497E+15
Volume
4.4229009710951E+22
Height
34003077.950481