28123791 is an odd 8-digits composite number following 28123790
and preceding 28123792 . In scientific notation, it is written as 2.8123791 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 18729432 positive integers (up to 28123791) that are relatively prime to 28123791.
28123791 has 8 divisors, whose sum is 37537920
The reverse of 28123791 is 19732182
Previous prime number is 1063
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-eight million one hundred twenty-three thousand seven hundred ninety-one
Scientific notation
2.8123791 × 10^7
Engineering notation
2.8123791 × 10^6
Prime Factorization
3 × 1063 × 8819
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
28123791
Product of the distinct prime numbers
The prime factorization of 28123791 is 3 × 1063 × 8819.
Since it has a total of 3 prime factors.
2 , 8 , 97 , 54 , 608 , 407 , 2727 , 5133 , 56982 , 92043 , 812118 , 937463 , 9125274 , 6974092 , 3044574 , 94838754 , 602265803 , 669795634 , 7181780937 , 8146783379
n×2
56247582
n×3
84371373
n×4
112495164
n×5
140618955
n÷2
14061895.5
n÷3
9374597
n÷3
7030947.75
n÷5
5624758.2
n2
790947620211681
n3
2.2244445562781E+22
n4
6.2559813791852E+29
n5
1.759419128081E+37
2 √n
5303.186872061
3 √n
304.1057421564
4 √n
72.822983130746
5 √n
30.889776951812
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-28123790
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28123791 can be divided by 8 positive divisors.
The sum of these divisors (counting 28123791) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101011010010001010001111
3
Ternary
1221220211120220
4
Quaternary
1223102022033
5
Quinary
24144430131
6
Senary
2442442423
8
Octal
153221217
10
Decimal
28123791
12
Duodecimal
9503413
16
Hexadecimal
1ad228f
20
Vigesimal
8ff99b
36
Base36
gqsgf
md5
4fc8f8328a2814dc3ba5fb82cdd98e2a
sha1
af604ef405e36844a53eb772ed4a55b44a74098a
sha256
5d47fa7bb500c438a02b5740bf70b16be4a5fc043e49e2e61f3857a1bb819f45
sha512
7acec1f4426b37bd8f6a8a8657a57af9836ed4a52821e115b528f82fadf66a2cc7b5b837c054ba0e852ff1d655931b6140c16ae8f11800e1a5df73ccb68098da
ripemd-160
0affb72522fbefe72f3ad054485630b27a263f5e
Diameter
56247582
Circumference
176706990.39339
Area
2.4848352330313E+15
Volume
9.317731568428E+22
Surface area
9.9393409321254E+15
Circumference
176706990.39339
Perimeter
112495164
Area
790947620211681
Diagonal
39773046.657546
Surface area
4745685721270086
Volume
2.2244445562781E+22
Space diagonal
48711834.913448
Perimeter
84371373
Area
3.4249036608308E+14
Altitude
24355917.456724
Surface area
3.4249036608308E+14
Volume
2.6215330501962E+21
Height
13257682.219182