72505921 is an odd 8-digits composite number following 72505920
and preceding 72505922 . In scientific notation, it is written as 7.2505921 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 72482500 positive integers (up to 72505921) that are relatively prime to 72505921.
72505921 has 4 divisors, whose sum is 72529344
The reverse of 72505921 is 12950527
Previous prime number is 3671
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
seventy-two million five hundred five thousand nine hundred twenty-one
Scientific notation
7.2505921 × 10^7
Engineering notation
7.2505921 × 10^6
Prime Factorization
3671 × 19751
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
72505921
Product of the distinct prime numbers
The prime factorization of 72505921 is 3671 × 19751.
Since it has a total of 2 prime factors.
7 , 3 , 69 , 31 , 325 , 492 , 4541 , 7988 , 33830 , 57839 , 980912 , 858676 , 4965997 , 5647691 , 62050991 , 72201977 , 399280418 , 989290821 , 8087639193 , 2500035948
n×2
145011842
n×3
217517763
n×4
290023684
n×5
362529605
n÷2
36252960.5
n÷3
24168640.333333
n÷3
18126480.25
n÷5
14501184.2
n2
5257108580058241
n3
3.8117149939413E+23
n4
2.7637190622522E+31
n5
2.0038599599385E+39
2 √n
8515.0408689565
3 √n
416.98889683606
4 √n
92.276979084474
5 √n
37.331435894881
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
-72505920
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 72505921 can be divided by 4 positive divisors.
The sum of these divisors (counting 72505921) is 1, the average is 0.25.
Base
System
Value
2
Binary
100010100100101101001000001
3
Ternary
12001102200102111
4
Quaternary
10110211221001
5
Quinary
122030142141
6
Senary
11110015321
8
Octal
424455101
10
Decimal
72505921
12
Duodecimal
20347541
16
Hexadecimal
4525a41
20
Vigesimal
12d34g1
36
Base36
1761xd
md5
8c6fd0929d9a2cd8b4816b2dcb897be3
sha1
224c2a1cc8e901834514089932cc33d06c994f4c
sha256
5e540216ba24c6b12f8faaf6b87f81d8937def741b26461f5bc98794d6be2e43
sha512
fd53332a664990db7b149223748504722fea1025c6bef0c0234f7536226160133124a1c7873d85a82f9a5ba117fc5159ffce21e0138c8ceaf049e602d9ed2942
ripemd-160
7e737d80e2a8b14961dd3c7e5057c1729ddec816
Diameter
145011842
Circumference
455568137.51072
Area
1.6515693694235E+16
Volume
1.5966474430059E+24
Surface area
6.6062774776939E+16
Circumference
455568137.51072
Perimeter
290023684
Area
5257108580058241
Diagonal
102538856.83055
Surface area
31542651480349446
Volume
3.8117149939413E+23
Space diagonal
125583939.02158
Perimeter
217517763
Area
2.2763947903918E+15
Altitude
62791969.510788
Surface area
2.2763947903918E+15
Volume
4.4921492002772E+22
Height
34179618.943517