28821405 is an odd 8-digits composite number following 28821404
and preceding 28821406 . In scientific notation, it is written as 2.8821405 × 10^7.
The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors.
There are 15371408 positive integers (up to 28821405) that are relatively prime to 28821405.
28821405 has 4 divisors, whose sum is 30742848
The reverse of 28821405 is 50412882
Previous prime number is 15
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty-eight million eight hundred twenty-one thousand four hundred five
Scientific notation
2.8821405 × 10^7
Engineering notation
2.8821405 × 10^6
Prime Factorization
15 × 1921427
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28821405
Product of the distinct prime numbers
The prime factorization of 28821405 is 15 × 1921427.
Since it has a total of 2 prime factors.
6 , 8 , 59 , 79 , 661 , 685 , 9613 , 1753 , 43419 , 99345 , 616458 , 998205 , 2144015 , 9482356 , 66046450 , 72754861 , 308369523 , 76236563 , 1022385236 , 320571709
n×2
57642810
n×3
86464215
n×4
115285620
n×5
144107025
n÷2
14410702.5
n÷3
9607135
n÷3
7205351.25
n÷5
5764281
n2
830673386174025
n3
2.3941174085643E+22
n4
6.9001827449782E+29
n5
1.9887296146703E+37
2 √n
5368.5570687104
3 √n
306.5996932879
4 √n
73.270437890805
5 √n
31.041523614932
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
-28821404
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 28821405 can be divided by 4 positive divisors.
The sum of these divisors (counting 28821405) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101101111100011110011101
3
Ternary
2000020021112110
4
Quaternary
1231330132131
5
Quinary
24334241110
6
Senary
2505424233
8
Octal
155743635
10
Decimal
28821405
12
Duodecimal
979b079
16
Hexadecimal
1b7c79d
20
Vigesimal
902da5
36
Base36
h5qql
md5
d2090a6c82fcde6d9f98d17f7b1cf02e
sha1
02389fbc8cba69ea45f8b817ba70e8c340f85c4d
sha256
d741a3933715baa007d1aeb07b53921a612427eae53d3079120b4e140df8747d
sha512
ed6ff063c63f0ec31406653a2299c8b250480771ff755dc55b7e89265025b8980a91c240f6453066f046f6f1350b99108ce9d74de2e97f929b1df32b0ab4f9d3
ripemd-160
74a0d9a6d9c24a0477cf152b19a3fc9734e2f31a
Diameter
57642810
Circumference
181090228.42827
Area
2.6096374075369E+15
Volume
1.0028455550103E+23
Surface area
1.0438549630147E+16
Circumference
181090228.42827
Perimeter
115285620
Area
830673386174025
Diagonal
40759621.837648
Surface area
4984040317044150
Volume
2.3941174085643E+22
Space diagonal
49920137.80552
Perimeter
86464215
Area
3.5969212733717E+14
Altitude
24960068.90276
Surface area
3.5969212733717E+14
Volume
2.8214944242543E+21
Height
13586540.612549