28691247 is an odd 8-digits composite number following 28691246
and preceding 28691248 . In scientific notation, it is written as 2.8691247 × 10^7.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 17656128 positive integers (up to 28691247) that are relatively prime to 28691247.
28691247 has 8 divisors, whose sum is 41197744
The reverse of 28691247 is 74219682
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty-eight million six hundred ninety-one thousand two hundred forty-seven
Scientific notation
2.8691247 × 10^7
Engineering notation
2.8691247 × 10^6
Prime Factorization
3 × 13 × 735673
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
28691247
Product of the distinct prime numbers
The prime factorization of 28691247 is 3 × 13 × 735673.
Since it has a total of 3 prime factors.
3 , 2 , 8 , 1 , 894 , 708 , 7896 , 2384 , 18869 , 62752 , 872010 , 607509 , 9692391 , 8493030 , 62720795 , 77468420 , 33935923 , 924296134 , 735547048 , 4953536044
n×2
57382494
n×3
86073741
n×4
114764988
n×5
143456235
n÷2
14345623.5
n÷3
9563749
n÷3
7172811.75
n÷5
5738249.4
n2
823187654415009
n3
2.3618280320172E+22
n4
6.7763791438128E+29
n5
1.9442276778078E+37
2 √n
5356.421099951
3 √n
306.13746013473
4 √n
73.187574764785
5 √n
31.013436011972
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
-28691246
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 28691247 can be divided by 8 positive divisors.
The sum of these divisors (counting 28691247) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101101011100101100101111
3
Ternary
1222222122222210
4
Quaternary
1231130230233
5
Quinary
24321104442
6
Senary
2502541503
8
Octal
155345457
10
Decimal
28691247
12
Duodecimal
9737893
16
Hexadecimal
1b5cb2f
20
Vigesimal
8j6827
36
Base36
h2yb3
md5
190b68b0b876394b3072ef3c6eb2b32d
sha1
847b696db533dc65e995ce4b121adc3dc39e656a
sha256
65573483eb478d88696d2a0327754bb4823e69a38cb83ea9c1a62e7ac6784e98
sha512
6424fb9c98326cccf16e509c922e285dac22a498284d540545a6bdb9ed6cbada3095363252ccf2f7b21eccbaf3499c121d052a63757c59f2f291f10cc2212d4b
ripemd-160
3dbc847412a52034174bca5ffde625471c7be363
Diameter
57382494
Circumference
180272421.59506
Area
2.586120287636E+15
Volume
9.8932021259034E+22
Surface area
1.0344481150544E+16
Circumference
180272421.59506
Perimeter
114764988
Area
823187654415009
Diagonal
40575550.628796
Surface area
4939125926490054
Volume
2.3618280320172E+22
Space diagonal
49694697.536508
Perimeter
86073741
Area
3.5645071040256E+14
Altitude
24847348.768254
Surface area
3.5645071040256E+14
Volume
2.7834410290597E+21
Height
13525183.542932