28666561 is an odd 8-digits composite number following 28666560
and preceding 28666562 . In scientific notation, it is written as 2.8666561 × 10^7.
The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors.
There are 22337520 positive integers (up to 28666561) that are relatively prime to 28666561.
28666561 has 4 divisors, whose sum is 29038932
The reverse of 28666561 is 16566682
Previous prime number is 77
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4
Name
twenty-eight million six hundred sixty-six thousand five hundred sixty-one
Scientific notation
2.8666561 × 10^7
Engineering notation
2.8666561 × 10^6
Prime Factorization
77 × 372293
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28666561
Product of the distinct prime numbers
The prime factorization of 28666561 is 77 × 372293.
Since it has a total of 2 prime factors.
10 , 3 , 72 , 35 , 28 , 417 , 1868 , 993 , 69848 , 5209 , 542530 , 514237 , 1668816 , 3699242 , 3026857 , 79238804 , 942137641 , 50921592 , 2781384376 , 2473425525
n×2
57333122
n×3
85999683
n×4
114666244
n×5
143332805
n÷2
14333280.5
n÷3
9555520.3333333
n÷3
7166640.25
n÷5
5733312.2
n2
821771719566721
n3
2.3557369127034E+22
n4
6.7530875907965E+29
n5
1.9358779735991E+37
2 √n
5354.1162669483
3 √n
306.04963453623
4 √n
73.171827002941
5 √n
31.008097371193
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
-28666560
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 28666561 can be divided by 4 positive divisors.
The sum of these divisors (counting 28666561) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101101010110101011000001
3
Ternary
1222221102010111
4
Quaternary
1231112223001
5
Quinary
24314312221
6
Senary
2502231321
8
Octal
155265301
10
Decimal
28666561
12
Duodecimal
9725541
16
Hexadecimal
1b56ac1
20
Vigesimal
8j3681
36
Base36
h2f9d
md5
11171e26ef4bd0b0c397fb689160fc9e
sha1
24b564fc4e826f0b23555198a51c6b2522697ada
sha256
46409a2968e3bdb9af709c6946c8b2ea07ccb713bc3f3b1e23352fb21e9247f5
sha512
daa9287ad4e2caacfdcdd480356b81270c8cd3d77c088231e0b1130eb70bced667d591d5a1271c186c524ead63ea9f7a07a04368fc9ba8ed11e48b07e679c073
ripemd-160
c963fb8951effeb4d6128d79a196e1647a06ab56
Diameter
57333122
Circumference
180117314.88257
Area
2.5816719971187E+15
Volume
9.8676877049859E+22
Surface area
1.0326687988475E+16
Circumference
180117314.88257
Perimeter
114666244
Area
821771719566721
Diagonal
40540639.352796
Surface area
4930630317400326
Volume
2.3557369127034E+22
Space diagonal
49651940.130272
Perimeter
85999683
Area
3.558375926282E+14
Altitude
24825970.065136
Surface area
3.558375926282E+14
Volume
2.7762625761068E+21
Height
13513546.450932