28009021 is an odd 8-digits composite number following 28009020
and preceding 28009022 . In scientific notation, it is written as 2.8009021 × 10^7.
The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors.
There are 26534844 positive integers (up to 28009021) that are relatively prime to 28009021.
28009021 has 4 divisors, whose sum is 29483200
The reverse of 28009021 is 12090082
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty-eight million nine thousand twenty-one
Scientific notation
2.8009021 × 10^7
Engineering notation
2.8009021 × 10^6
Prime Factorization
19 × 1474159
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28009021
Product of the distinct prime numbers
The prime factorization of 28009021 is 19 × 1474159.
Since it has a total of 2 prime factors.
6 , 6 , 65 , 51 , 49 , 862 , 3457 , 6192 , 40767 , 26189 , 312474 , 427388 , 3738500 , 165397 , 43795248 , 19451900 , 312478518 , 422384989 , 2398191597 , 4929134707
n×2
56018042
n×3
84027063
n×4
112036084
n×5
140045105
n÷2
14004510.5
n÷3
9336340.3333333
n÷3
7002255.25
n÷5
5601804.2
n2
784505257378441
n3
2.1973224228523E+22
n4
6.1544849885441E+29
n5
1.7238109928832E+37
2 √n
5292.3549578614
3 √n
303.69150448259
4 √n
72.748573579565
5 √n
30.864524161625
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
-28009020
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 28009021 can be divided by 4 positive divisors.
The sum of these divisors (counting 28009021) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101010110110001000111101
3
Ternary
1221201000011011
4
Quaternary
1222312020331
5
Quinary
24132242041
6
Senary
2440155221
8
Octal
152661075
10
Decimal
28009021
12
Duodecimal
9468b11
16
Hexadecimal
1ab623d
20
Vigesimal
8f12b1
36
Base36
gobwd
md5
bfe8a5a79b3e64dcd45bdc8016f0894c
sha1
69fe1913f1513a92934ad6b0e3e7f1287bde2120
sha256
b6b0dac5083c493731453f9bd359b5826ac3f5465e8e2fda8c2515f4a3f260ce
sha512
09844a459396fdef522b930617f601dbdc81b242468afd8019e3bf4e0f18e3b5de6b33a9346ec7772dfc35bad41be1abdc55da2238e2796996ca329e30df8348
ripemd-160
3361a3bd07000b6fa35caaca7f71bd851d2adc2c
Diameter
56018042
Circumference
175985869.21568
Area
2.4645959532827E+15
Volume
9.2041226416013E+22
Surface area
9.8583838131307E+15
Circumference
175985869.21568
Perimeter
112036084
Area
784505257378441
Diagonal
39610737.366993
Surface area
4707031544270646
Volume
2.1973224228523E+22
Space diagonal
48513047.442264
Perimeter
84027063
Area
3.3970074114609E+14
Altitude
24256523.721132
Surface area
3.3970074114609E+14
Volume
2.5895693094202E+21
Height
13203579.122331