28930021 is an odd 8-digits composite number following 28930020
and preceding 28930022 . In scientific notation, it is written as 2.8930021 × 10^7.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 27672172 positive integers (up to 28930021) that are relatively prime to 28930021.
28930021 has 4 divisors, whose sum is 30187872
The reverse of 28930021 is 12003982
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7
Name
twenty-eight million nine hundred thirty thousand twenty-one
Scientific notation
2.8930021 × 10^7
Engineering notation
2.8930021 × 10^6
Prime Factorization
23 × 1257827
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28930021
Product of the distinct prime numbers
The prime factorization of 28930021 is 23 × 1257827.
Since it has a total of 2 prime factors.
5 , 3 , 14 , 82 , 836 , 296 , 2258 , 9257 , 89883 , 3030 , 897946 , 456282 , 7018733 , 9442965 , 35438649 , 74676336 , 628353505 , 106892944 , 5751172389 , 7587755824
n×2
57860042
n×3
86790063
n×4
115720084
n×5
144650105
n÷2
14465010.5
n÷3
9643340.3333333
n÷3
7232505.25
n÷5
5786004.2
n2
836946115060441
n3
2.4212868684567E+22
n4
7.0047879951476E+29
n5
2.0264866380017E+37
2 √n
5378.6634957023
3 √n
306.98435977999
4 √n
73.339372070548
5 √n
31.064884968157
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
-28930020
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 28930021 can be divided by 4 positive divisors.
The sum of these divisors (counting 28930021) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101110010110111111100101
3
Ternary
2000102210112021
4
Quaternary
1232112333211
5
Quinary
24401230041
6
Senary
2512023141
8
Octal
156267745
10
Decimal
28930021
12
Duodecimal
9831ab1
16
Hexadecimal
1b96fe5
20
Vigesimal
90g511
36
Base36
h82jp
md5
36e7117464b35185bfcf6a3a995c69ca
sha1
efb161f445fc53db77f4db13bab5a78119bb0cfc
sha256
e25a13b7e26e73aa8f5254d5296a310a20645c46d4476229e456821ff83c3907
sha512
a9083307207661352d13eaa9ef05a4fe1088357df74d1cbdfc2ea36095135eeffa1ec7556ac2e70f3dc524c246e2abd5b4fc508e19a3aca32c6193044919762b
ripemd-160
bad751be421eedeb90bd30914178562ead55a034
Diameter
57860042
Circumference
181772682.8836
Area
2.6293437665244E+15
Volume
1.0142262717569E+23
Surface area
1.0517375066098E+16
Circumference
181772682.8836
Perimeter
115720084
Area
836946115060441
Diagonal
40913228.057938
Surface area
5021676690362646
Volume
2.4212868684567E+22
Space diagonal
50108266.236035
Perimeter
86790063
Area
3.6240829862052E+14
Altitude
25054133.118017
Surface area
3.6240829862052E+14
Volume
2.8535139398061E+21
Height
13637742.685979