28691288 is an even 8-digits composite number following 28691287
and preceding 28691289 . In scientific notation, it is written as 2.8691288 × 10^7.
The sum of its digits is 44. It has a total of 4 prime factors and 8 positive divisors.
There are 14345640 positive integers (up to 28691288) that are relatively prime to 28691288.
28691288 has 8 divisors, whose sum is 53796180
The reverse of 28691288 is 88219682
Previous prime number is 2
Is Prime? no
Number parity even
Number length 8
Sum of Digits 44
Digital Root 8
Name
twenty-eight million six hundred ninety-one thousand two hundred eighty-eight
Scientific notation
2.8691288 × 10^7
Engineering notation
2.8691288 × 10^6
Prime Factorization
2 × 2 × 2 × 3586411
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
7172822
Product of the distinct prime numbers
The prime factorization of 28691288 is 2 × 2 × 2 × 3586411.
Since it has a total of 4 prime factors.
8 , 2 , 83 , 40 , 361 , 598 , 4471 , 4396 , 71978 , 85417 , 554101 , 34623 , 4688307 , 8514203 , 55714043 , 66665095 , 594258403 , 310769633 , 294974660 , 7569049937
n×2
57382576
n×3
86073864
n×4
114765152
n×5
143456440
n÷2
14345644
n÷3
9563762.6666667
n÷3
7172822
n÷5
5738257.6
n2
823190007098944
n3
2.3618381572398E+22
n4
6.7764178778756E+29
n5
1.9442415694248E+37
2 √n
5356.4249271319
3 √n
306.13760595888
4 √n
73.187600911165
5 √n
31.013444875652
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
-28691287
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 28691288 can be divided by 8 positive divisors.
The sum of these divisors (counting 28691288) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101101011100101101011000
3
Ternary
1222222200001022
4
Quaternary
1231130231120
5
Quinary
24321110123
6
Senary
2502542012
8
Octal
155345530
10
Decimal
28691288
12
Duodecimal
9737908
16
Hexadecimal
1b5cb58
20
Vigesimal
8j6848
36
Base36
h2yc8
md5
56a64486a9b14a5a2dee7fdb118838e5
sha1
3796aa293b922e9e8fd5648f6f30200cc68a44c6
sha256
f55f769619009dd4663c03d6047e070d03129eb75343bf787d9083c6612e3ef2
sha512
fb75006e6b1c134c31c990711188a1fd2b67c7d0be88fc02f6c853a92401098671fb1a6c078528b297c62042dd466b305429a7bd2c7b76c0f48de3ebb4fcc866
ripemd-160
144a89ab929dcbd33b74caea643e0ab115b4a353
Diameter
57382576
Circumference
180272679.20566
Area
2.5861276788106E+15
Volume
9.8932445383367E+22
Surface area
1.0344510715242E+16
Circumference
180272679.20566
Perimeter
114765152
Area
823190007098944
Diagonal
40575608.611552
Surface area
4939140042593664
Volume
2.3618381572398E+22
Space diagonal
49694768.550591
Perimeter
86073864
Area
3.5645172914459E+14
Altitude
24847384.275296
Surface area
3.5645172914459E+14
Volume
2.783452961749E+21
Height
13525202.870517