28508729 is an odd 8-digits composite number following 28508728
and preceding 28508730 . In scientific notation, it is written as 2.8508729 × 10^7.
The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors.
There are 28484340 positive integers (up to 28508729) that are relatively prime to 28508729.
28508729 has 4 divisors, whose sum is 28533120
The reverse of 28508729 is 92780582
Previous prime number is 1231
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5
Name
twenty-eight million five hundred eight thousand seven hundred twenty-nine
Scientific notation
2.8508729 × 10^7
Engineering notation
2.8508729 × 10^6
Prime Factorization
1231 × 23159
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28508729
Product of the distinct prime numbers
The prime factorization of 28508729 is 1231 × 23159.
Since it has a total of 2 prime factors.
8 , 7 , 94 , 15 , 373 , 623 , 9789 , 9665 , 27126 , 39766 , 871093 , 410745 , 3044504 , 9576507 , 88857209 , 77361449 , 183488433 , 154764031 , 8534550498 , 9022465920
n×2
57017458
n×3
85526187
n×4
114034916
n×5
142543645
n÷2
14254364.5
n÷3
9502909.6666667
n÷3
7127182.25
n÷5
5701745.8
n2
812747629195441
n3
2.3170401906125E+22
n4
6.6055870876281E+29
n5
1.8831689216709E+37
2 √n
5339.3566091805
3 √n
305.48691909708
4 √n
73.070901247901
5 √n
30.973877123761
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
-28508728
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 28508729 can be divided by 4 positive divisors.
The sum of these divisors (counting 28508729) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101100110000001000111001
3
Ternary
1222122101121212
4
Quaternary
1230300020321
5
Quinary
24244234404
6
Senary
2455012505
8
Octal
154601071
10
Decimal
28508729
12
Duodecimal
966a135
16
Hexadecimal
1b30239
20
Vigesimal
8i3bg9
36
Base36
gz1h5
md5
574ce1ebcadeb594e2c0dea711d742f4
sha1
8ff1c75d02e5de8670228d3bfe2defe6f6709bd9
sha256
cd226e482f848082fbc4fbc132f2bb4e8831d6f215f6e0c21f45c72f253ccebd
sha512
1df52263ca50c9491f3355d538dce678a7c74ee033e3147bdfb9bceaa313510cb62a5525c179e0674e6170977ccb0bd7557dc417726b488c25656bcb9ade7a67
ripemd-160
cf264a40194e656dd68108cc9461ff897107883b
Diameter
57017458
Circumference
179125627.17916
Area
2.5533219811029E+15
Volume
9.7055952545342E+22
Surface area
1.0213287924412E+16
Circumference
179125627.17916
Perimeter
114034916
Area
812747629195441
Diagonal
40317431.197819
Surface area
4876485775172646
Volume
2.3170401906125E+22
Space diagonal
49378567.087212
Perimeter
85526187
Area
3.5193004687441E+14
Altitude
24689283.543606
Surface area
3.5193004687441E+14
Volume
2.7306580517732E+21
Height
13439143.732606