28931465 is an odd 8-digits composite number following 28931464
and preceding 28931466 . In scientific notation, it is written as 2.8931465 × 10^7.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 23145168 positive integers (up to 28931465) that are relatively prime to 28931465.
28931465 has 4 divisors, whose sum is 34717764
The reverse of 28931465 is 56413982
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2
Name
twenty-eight million nine hundred thirty-one thousand four hundred sixty-five
Scientific notation
2.8931465 × 10^7
Engineering notation
2.8931465 × 10^6
Prime Factorization
5 × 5786293
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28931465
Product of the distinct prime numbers
The prime factorization of 28931465 is 5 × 5786293.
Since it has a total of 2 prime factors.
7 , 4 , 89 , 90 , 375 , 475 , 930 , 6394 , 14378 , 9504 , 109967 , 513126 , 9650883 , 8002522 , 89373777 , 92414875 , 28814166 , 647280237 , 5091413601 , 2251998524
n×2
57862930
n×3
86794395
n×4
115725860
n×5
144657325
n÷2
14465732.5
n÷3
9643821.6666667
n÷3
7232866.25
n÷5
5786293
n2
837029667046225
n3
2.421649451611E+22
n4
7.0061866351551E+29
n5
2.0269924341846E+37
2 √n
5378.7977281173
3 √n
306.98946725457
4 √n
73.340287210491
5 √n
31.065195073693
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
-28931464
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 28931465 can be divided by 4 positive divisors.
The sum of these divisors (counting 28931465) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101110010111010110001001
3
Ternary
2000102212111202
4
Quaternary
1232113112021
5
Quinary
24401301330
6
Senary
2512033545
8
Octal
156272611
10
Decimal
28931465
12
Duodecimal
98328b5
16
Hexadecimal
1b97589
20
Vigesimal
90g8d5
36
Base36
h83nt
md5
d0a83fce200d709b4aa6646e4a194109
sha1
ef685db85a66bcb44fd30a31a3ca8a407862885d
sha256
4e59d951ad37c83e5d6ded034d62579aeaffce04c74d9e69d96bf0691ce6abad
sha512
18476b76ae393649cee78b72aa07412b2ed13d769b5ebec4ddc52cf5f554b60c103ab0ad9cac74bae0abfa6b533587419503c0205102b356b0e41080ec8a5c76
ripemd-160
3d82a72cac9837a3c33a013e1dc6da1d72ea1e63
Diameter
57862930
Circumference
181781755.80318
Area
2.6296062528291E+15
Volume
1.0143781502334E+23
Surface area
1.0518425011317E+16
Circumference
181781755.80318
Perimeter
115725860
Area
837029667046225
Diagonal
40915270.182323
Surface area
5022178002277350
Volume
2.421649451611E+22
Space diagonal
50110767.317401
Perimeter
86794395
Area
3.6244447769163E+14
Altitude
25055383.6587
Surface area
3.6244447769163E+14
Volume
2.8539412481513E+21
Height
13638423.394108