28278987 is an odd 8-digits composite number following 28278986
and preceding 28278988 . In scientific notation, it is written as 2.8278987 × 10^7.
The sum of its digits is 51. It has a total of 3 prime factors and 8 positive divisors.
There are 17138760 positive integers (up to 28278987) that are relatively prime to 28278987.
28278987 has 8 divisors, whose sum is 41133120
The reverse of 28278987 is 78987282
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 51
Digital Root 6
Name
twenty-eight million two hundred seventy-eight thousand nine hundred eighty-seven
Scientific notation
2.8278987 × 10^7
Engineering notation
2.8278987 × 10^6
Prime Factorization
11 × 3 × 856939
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
28278987
Product of the distinct prime numbers
The prime factorization of 28278987 is 11 × 3 × 856939.
Since it has a total of 3 prime factors.
8 , 6 , 98 , 68 , 156 , 471 , 9605 , 8691 , 96234 , 56062 , 389570 , 724932 , 8074658 , 8780760 , 21348990 , 53923527 , 997443428 , 362225076 , 3457878305 , 8106906850
n×2
56557974
n×3
84836961
n×4
113115948
n×5
141394935
n÷2
14139493.5
n÷3
9426329
n÷3
7069746.75
n÷5
5655797.4
n2
799701105746169
n3
2.2614737173282E+22
n4
6.3952185853165E+29
n5
1.8085030323632E+37
2 √n
5317.7990748053
3 √n
304.66410033052
4 √n
72.923240978479
5 √n
30.923793865584
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
-28278986
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 28278987 can be divided by 8 positive divisors.
The sum of these divisors (counting 28278987) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101011111000000011001011
3
Ternary
1222012201110220
4
Quaternary
1223320003023
5
Quinary
24214411422
6
Senary
2450041123
8
Octal
153700313
10
Decimal
28278987
12
Duodecimal
95791a3
16
Hexadecimal
1af80cb
20
Vigesimal
8geh97
36
Base36
gu47f
md5
596708d040685b96f4c661e38465f7c8
sha1
cc9dcce671d1d7af1d55727c40aabaca0dae39d5
sha256
86eaa5d607d81d397e9740d1f77beadb1e2871006eab6079c52bb5b7789223da
sha512
a2457d1a1ac1809a794212317d7f91bc8479456a58e4cfe07f88f6d85fa9aa34ede393ea7686cceb747cb303142e68151c255dc0fa9dfa34893d4cd7f5ce33c3
ripemd-160
f3ff559b14a55710e3e4c9fc36e0478f95a01caa
Diameter
56557974
Circumference
177682115.62032
Area
2.5123351188798E+15
Volume
9.472838955526E+22
Surface area
1.0049340475519E+16
Circumference
177682115.62032
Perimeter
113115948
Area
799701105746169
Diagonal
39992526.945572
Surface area
4798206634477014
Volume
2.2614737173282E+22
Space diagonal
48980642.27058
Perimeter
84836961
Area
3.4628073650534E+14
Altitude
24490321.13529
Surface area
3.4628073650534E+14
Volume
2.6651723349965E+21
Height
13330842.315191