28005621 is an odd 8-digits composite number following 28005620
and preceding 28005622 . In scientific notation, it is written as 2.8005621 × 10^7.
The sum of its digits is 24. It has a total of 2 prime factors and 4 positive divisors.
There are 16003200 positive integers (up to 28005621) that are relatively prime to 28005621.
28005621 has 4 divisors, whose sum is 29339244
The reverse of 28005621 is 12650082
Previous prime number is 21
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-eight million five thousand six hundred twenty-one
Scientific notation
2.8005621 × 10^7
Engineering notation
2.8005621 × 10^6
Prime Factorization
21 × 1333601
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28005621
Product of the distinct prime numbers
The prime factorization of 28005621 is 21 × 1333601.
Since it has a total of 2 prime factors.
2 , 9 , 46 , 16 , 511 , 483 , 4119 , 4533 , 25197 , 8450 , 732762 , 88504 , 8662721 , 5712862 , 690613 , 8207132 , 795876358 , 944347159 , 4233786691 , 6067113449
n×2
56011242
n×3
84016863
n×4
112022484
n×5
140028105
n÷2
14002810.5
n÷3
9335207
n÷3
7001405.25
n÷5
5601124.2
n2
784314807595641
n3
2.1965223246211E+22
n4
6.1514971741379E+29
n5
1.7227649844148E+37
2 √n
5292.0337300512
3 √n
303.67921566919
4 √n
72.746365751502
5 √n
30.86377479964
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
-28005620
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 28005621 can be divided by 4 positive divisors.
The sum of these divisors (counting 28005621) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101010110101010011110101
3
Ternary
1221200211111020
4
Quaternary
1222311103311
5
Quinary
24132134441
6
Senary
2440131353
8
Octal
152652365
10
Decimal
28005621
12
Duodecimal
9466b59
16
Hexadecimal
1ab54f5
20
Vigesimal
8f0e11
36
Base36
go99x
md5
a46328ca07deeb51d92e26562b500649
sha1
56a19b41f2dc42ca195d6fcc4231f123358eb5f3
sha256
1c75808d1a90c3bb61958a0ad81a5f4447dcbfcc13a5fd22e413bcfaf233e245
sha512
3358a2df3e21b0be30090bcf083f288c6af40540de0749287b16e3480707649c0fb5a1869977b7173ca7cf4356146886c98739510633b430c7d39cea877dae2a
ripemd-160
4baa2e4f65a008d323b9b5564270835b178f0ed6
Diameter
56011242
Circumference
175964506.38564
Area
2.4639976376442E+15
Volume
9.2007711979677E+22
Surface area
9.8559905505766E+15
Circumference
175964506.38564
Perimeter
112022484
Area
784314807595641
Diagonal
39605929.040881
Surface area
4705888845573846
Volume
2.1965223246211E+22
Space diagonal
48507158.469518
Perimeter
84016863
Area
3.3961827397106E+14
Altitude
24253579.234759
Surface area
3.3961827397106E+14
Volume
2.5886263846121E+21
Height
13201976.34696