28661005 is an odd 8-digits composite number following 28661004
and preceding 28661006 . In scientific notation, it is written as 2.8661005 × 10^7.
The sum of its digits is 28. It has a total of 4 prime factors and 16 positive divisors.
There are 22171968 positive integers (up to 28661005) that are relatively prime to 28661005.
28661005 has 16 divisors, whose sum is 35544960
The reverse of 28661005 is 50016682
Previous prime number is 109
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty-eight million six hundred sixty-one thousand five
Scientific notation
2.8661005 × 10^7
Engineering notation
2.8661005 × 10^6
Prime Factorization
5 × 43 × 109 × 1223
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
28661005
Product of the distinct prime numbers
The prime factorization of 28661005 is 5 × 43 × 109 × 1223.
Since it has a total of 4 prime factors.
8 , 7 , 6 , 6 , 464 , 43 , 3657 , 6917 , 2606 , 48415 , 358919 , 418034 , 6422542 , 6551828 , 55513459 , 58761511 , 850054310 , 723362345 , 8641553945 , 2917096765
n×2
57322010
n×3
85983015
n×4
114644020
n×5
143305025
n÷2
14330502.5
n÷3
9553668.3333333
n÷3
7165251.25
n÷5
5732201
n2
821453207610025
n3
2.3543674490577E+22
n4
6.747853722928E+29
n5
1.9340026929211E+37
2 √n
5353.5973886724
3 √n
306.02986095595
4 √n
73.168281301889
5 √n
31.00689531318
1 , 5 , 43 , 109 , 215 , 545 , 1223 , 4687 , 6115 , 23435 , 52589 , 133307 , 262945 , 666535 , 5732201 , 28661005
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-28661004
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28661005 can be divided by 16 positive divisors.
The sum of these divisors (counting 28661005) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1101101010101010100001101
3
Ternary
1222221010111201
4
Quaternary
1231111110031
5
Quinary
24314123010
6
Senary
2502145501
8
Octal
155252415
10
Decimal
28661005
12
Duodecimal
9722291
16
Hexadecimal
1b5550d
20
Vigesimal
8j2ca5
36
Base36
h2az1
md5
3b64add2fbae4e74ae5020bf63d50bb1
sha1
1fb63db473795aabf458a100065a4f907c61b257
sha256
513bc7596b6ad9d26736f6b5436d34cc4ab3fc26d2743d995530dab63cecb3b3
sha512
3ead28c043c490b165e6e566cd9d52aec9f7fbb9c1800c72207f7179b5f7d3cfdbd82b612cf9293da5d7c890d4db525a2f91215c1e50376b6216e020b256ec36
ripemd-160
3dc13d5948063d8dc7f867579c07daff60f09c4d
Diameter
57322010
Circumference
180082405.505
Area
2.5806713622954E+15
Volume
9.8619513090808E+22
Surface area
1.0322685449182E+16
Circumference
180082405.505
Perimeter
114644020
Area
821453207610025
Diagonal
40532781.982243
Surface area
4928719245660150
Volume
2.3543674490577E+22
Space diagonal
49642316.855986
Perimeter
85983015
Area
3.5569967290525E+14
Altitude
24821158.427993
Surface area
3.5569967290525E+14
Volume
2.7746486477226E+21
Height
13510927.327414