28406921 is an odd 8-digits composite number following 28406920
and preceding 28406922 . In scientific notation, it is written as 2.8406921 × 10^7.
The sum of its digits is 32. It has a total of 2 prime factors and 4 positive divisors.
There are 27427344 positive integers (up to 28406921) that are relatively prime to 28406921.
28406921 has 4 divisors, whose sum is 29386500
The reverse of 28406921 is 12960482
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-eight million four hundred six thousand nine hundred twenty-one
Scientific notation
2.8406921 × 10^7
Engineering notation
2.8406921 × 10^6
Prime Factorization
29 × 979549
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28406921
Product of the distinct prime numbers
The prime factorization of 28406921 is 29 × 979549.
Since it has a total of 2 prime factors.
10 , 5 , 49 , 49 , 120 , 465 , 6421 , 6620 , 93846 , 81840 , 232822 , 59172 , 9420940 , 637513 , 68093825 , 67132218 , 703949496 , 766622261 , 4359020775 , 873072643
n×2
56813842
n×3
85220763
n×4
113627684
n×5
142034605
n÷2
14203460.5
n÷3
9468973.6666667
n÷3
7101730.25
n÷5
5681384.2
n2
806953160700241
n3
2.2923054686712E+22
n4
6.5117340356411E+29
n5
1.8497831432347E+37
2 √n
5329.8143494872
3 √n
305.12284221304
4 √n
73.00557752314
5 √n
30.951723189047
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
-28406920
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 28406921 can be divided by 4 positive divisors.
The sum of these divisors (counting 28406921) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101100010111010010001001
3
Ternary
1222110012222012
4
Quaternary
1230113102021
5
Quinary
24233010141
6
Senary
2452505305
8
Octal
154272211
10
Decimal
28406921
12
Duodecimal
961b235
16
Hexadecimal
1b17489
20
Vigesimal
8hah61
36
Base36
gwux5
md5
f42ae8bfb34bb59536c781d811c8492c
sha1
8b90ed270d5cf105060db51a31dfba507804559b
sha256
adda5f7d66ff46f0e66565ee1ee5af5b09e9b19e1c2cd5bec88b43cc427a8adf
sha512
4aa7af296b4d2b894cf06b50a7433fc867cf9323b95cf2854812398b276ba7512d3692513ddb65f763f24ee54066797cab4ccc465c82387377eb122cfb738b5b
ripemd-160
bfad43f8e848ba6aa64e61a6195d321b9685021e
Diameter
56813842
Circumference
178485948.64941
Area
2.5351181214469E+15
Volume
9.6019866935482E+22
Surface area
1.0140472485788E+16
Circumference
178485948.64941
Perimeter
113627684
Area
806953160700241
Diagonal
40173452.943461
Surface area
4841718964201446
Volume
2.2923054686712E+22
Space diagonal
49202230.458595
Perimeter
85220763
Area
3.4942096841528E+14
Altitude
24601115.229298
Surface area
3.4942096841528E+14
Volume
2.701507902414E+21
Height
13391150.981154