28521729 is an odd 8-digits composite number following 28521728
and preceding 28521730 . In scientific notation, it is written as 2.8521729 × 10^7.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 18885984 positive integers (up to 28521729) that are relatively prime to 28521729.
28521729 has 8 divisors, whose sum is 31905000
The reverse of 28521729 is 92712582
Previous prime number is 149
Is Prime? no Number parity odd Number length 8 Sum of Digits 36 Digital Root 9
Name
twenty-eight million five hundred twenty-one thousand seven hundred twenty-nine
Scientific notation
2.8521729 × 10^7
Engineering notation
2.8521729 × 10^6
Prime Factorization
9 × 149 × 21269
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
28521729 Product of the distinct prime numbers
The prime factorization of 28521729 is 9 × 149 × 21269.
Since it has a total of 3 prime factors.
4 , 4 , 78 , 53 , 478 , 33 , 5999 , 8635 , 3207 , 94661 , 979883 , 421102 , 4884604 , 381693 , 22908078 , 4697118 , 458438511 , 23529942 , 7473981998 , 7594326164
n×2
57043458
n×3
85565187
n×4
114086916
n×5
142608645
n÷2
14260864.5
n÷3
9507243
n÷3
7130432.25
n÷5
5704345.8
n2
813489025149441
n3
2.3202113519787E+22
n4
6.6176439403859E+29
n5
1.8874664708618E+37
2 √n5340.5738455713
3 √n305.5333461225
4 √n73.079229919118
5 √n30.976701430501
8 divisors
τ Total Divisors
8 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-28521728 Sum of the proper positive divisors of n
A Arithmetic Mean
0.125 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
8 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28521729 can be divided by 8 positive divisors.
The sum of these divisors (counting 28521729) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101100110011010100000001
3
Ternary
1222200001110100
4
Quaternary
1230303110001
5
Quinary
24300143404
6
Senary
2455153013
8
Octal
154632401
10
Decimal
28521729
12
Duodecimal
9675769
16
Hexadecimal
1b33501
20
Vigesimal
8i5469
36
Base36
gzbi9
md5
f76a25a5d722b0c6035968d2181875bd
sha1
07cc8132c232459f23e49d1c24e826ef11756a22
sha256
f35d21236a98a05cd85af3a64ab2468aed81614e2695be7ecfb998df4fe54622
sha512
e6ccc901b333176d467d9d590f8a20b9bb28247c59e012b41e4bffce85e24cc87de9b7f008f89b29e0f8701d482d9d0068874fa052f1d0ec714d7a07c6b33672
ripemd-160
03960565c1843c5c53f85b374836078f979288ac
Diameter
57043458
Circumference
179207308.58816
Area
2.5556511451854E+15
Volume
9.7188785842024E+22
Surface area
1.0222604580742E+16
Circumference
179207308.58816
Perimeter
114086916
Area
813489025149441
Diagonal
40335815.97413
Surface area
4880934150896646
Volume
2.3202113519787E+22
Space diagonal
49401083.747711
Perimeter
85565187
Area
3.5225108073963E+14
Altitude
24700541.873855
Surface area
3.5225108073963E+14
Volume
2.7343953012835E+21
Height
13445271.991377