28991663 is an odd 8-digits composite number following 28991662
and preceding 28991664 . In scientific notation, it is written as 2.8991663 × 10^7.
The sum of its digits is 44. It has a total of 2 prime factors and 4 positive divisors.
There are 27465768 positive integers (up to 28991663) that are relatively prime to 28991663.
28991663 has 4 divisors, whose sum is 30517560
The reverse of 28991663 is 36619982
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 44
Digital Root 8
Name
twenty-eight million nine hundred ninety-one thousand six hundred sixty-three
Scientific notation
2.8991663 × 10^7
Engineering notation
2.8991663 × 10^6
Prime Factorization
19 × 1525877
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28991663
Product of the distinct prime numbers
The prime factorization of 28991663 is 19 × 1525877.
Since it has a total of 2 prime factors.
8 , 9 , 48 , 77 , 626 , 319 , 2836 , 6675 , 17790 , 14818 , 55978 , 477576 , 6985237 , 1124240 , 99871612 , 57043069 , 990899185 , 432117223 , 6596461303 , 8797440491
n×2
57983326
n×3
86974989
n×4
115966652
n×5
144958315
n÷2
14495831.5
n÷3
9663887.6666667
n÷3
7247915.75
n÷5
5798332.6
n2
840516523505569
n3
2.4367971795405E+22
n4
7.0646802628589E+29
n5
2.0481682938356E+37
2 √n
5384.3906804763
3 √n
307.2022384763
4 √n
73.378407453939
5 √n
31.078111862593
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
-28991662
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 28991663 can be divided by 4 positive divisors.
The sum of these divisors (counting 28991663) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101110100110000010101111
3
Ternary
2000112221002022
4
Quaternary
1232212002233
5
Quinary
24410213123
6
Senary
2513220355
8
Octal
156460257
10
Decimal
28991663
12
Duodecimal
98616bb
16
Hexadecimal
1ba60af
20
Vigesimal
913j33
36
Base36
h9e3z
md5
5cabc0fa6282d6cc5998d09798445abb
sha1
af2a7a711566ba9e283df3ddabd1526e372c9d3b
sha256
e914e86aae5c67d8f1cb2e2cb0d7ca057f33fa5f0f8e9d295a9dff657d29390a
sha512
baebf7fd3e2714e90e42cb9f225b74f53e464c3fc2d01190d8741ae9d74ceb3fe397a78485d72da8be7a92ed1d0ab9756323bfcfb44a2bcb2504c96a082f6622
ripemd-160
9cc3c7148f3042c4ce567762faff5f20ea8da43c
Diameter
57983326
Circumference
182159990.9923
Area
2.6405605354659E+15
Volume
1.020723215671E+23
Surface area
1.0562242141864E+16
Circumference
182159990.9923
Perimeter
115966652
Area
840516523505569
Diagonal
41000403.01035
Surface area
5043099141033414
Volume
2.4367971795405E+22
Space diagonal
50215033.311915
Perimeter
86974989
Area
3.639543308282E+14
Altitude
25107516.655957
Surface area
3.639543308282E+14
Volume
2.8717930167156E+21
Height
13666801.00345