28491639 is an odd 8-digits composite number following 28491638
and preceding 28491640 . In scientific notation, it is written as 2.8491639 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 17104160 positive integers (up to 28491639) that are relatively prime to 28491639.
28491639 has 8 divisors, whose sum is 29633040
The reverse of 28491639 is 93619482
Previous prime number is 107
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twenty-eight million four hundred ninety-one thousand six hundred thirty-nine
Scientific notation
2.8491639 × 10^7
Engineering notation
2.8491639 × 10^6
Prime Factorization
33 × 107 × 8069
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
28491639
Product of the distinct prime numbers
The prime factorization of 28491639 is 33 × 107 × 8069.
Since it has a total of 3 prime factors.
1 , 5 , 50 , 61 , 224 , 62 , 1483 , 2272 , 89807 , 82920 , 670200 , 522682 , 6715205 , 1463642 , 9570046 , 95793714 , 815214642 , 183949256 , 8262832072 , 2429109190
n×2
56983278
n×3
85474917
n×4
113966556
n×5
142458195
n÷2
14245819.5
n÷3
9497213
n÷3
7122909.75
n÷5
5698327.8
n2
811773492906321
n3
2.3128757309656E+22
n4
6.5897620378533E+29
n5
1.8775312107842E+37
2 √n
5337.7559891775
3 √n
305.42586393722
4 √n
73.059947913871
5 √n
30.970162678722
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
-28491638
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 28491639 can be divided by 8 positive divisors.
The sum of these divisors (counting 28491639) is 1, the average is 0.125.
Base
System
Value
2
Binary
1101100101011111101110111
3
Ternary
1222121112011220
4
Quaternary
1230223331313
5
Quinary
24243213024
6
Senary
2454401423
8
Octal
154537567
10
Decimal
28491639
12
Duodecimal
9660273
16
Hexadecimal
1b2bf77
20
Vigesimal
8i191j
36
Base36
gyoaf
md5
1e9613bbba35447158869a6d944fad84
sha1
d6198cbdc4f787ac52196c05086f6274a1c1658b
sha256
696fcde42cf97f40e62db82e87667b4a3b1a5bf945ca8db617c87a368273f87a
sha512
57c4ef99a4368f4a9478a504607f5db5bbfd9d837e7446e757f94ac1d8376ffaf9eb16fec1ad2bb8f7fec3628c3125ab12fd2eb7a3d5bc3ccc44a265094652d4
ripemd-160
62c27245cfd146df1753364a3732fc604f11c41a
Diameter
56983278
Circumference
179018247.54226
Area
2.5502616416934E+15
Volume
9.6881512067569E+22
Surface area
1.0201046566774E+16
Circumference
179018247.54226
Perimeter
113966556
Area
811773492906321
Diagonal
40293262.288038
Surface area
4870640957437926
Volume
2.3128757309656E+22
Space diagonal
49348966.338911
Perimeter
85474917
Area
3.5150823348785E+14
Altitude
24674483.169455
Surface area
3.5150823348785E+14
Volume
2.7257501890126E+21
Height
13431087.429346