28128085 is an odd 8-digits composite number following 28128084
and preceding 28128086 . In scientific notation, it is written as 2.8128085 × 10^7.
The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors.
There are 22502464 positive integers (up to 28128085) that are relatively prime to 28128085.
28128085 has 4 divisors, whose sum is 33753708
The reverse of 28128085 is 58082182
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-eight million one hundred twenty-eight thousand eighty-five
Scientific notation
2.8128085 × 10^7
Engineering notation
2.8128085 × 10^6
Prime Factorization
5 × 5625617
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28128085
Product of the distinct prime numbers
The prime factorization of 28128085 is 5 × 5625617.
Since it has a total of 2 prime factors.
10 , 4 , 45 , 60 , 549 , 224 , 8766 , 7785 , 95380 , 7570 , 976103 , 946274 , 971824 , 2079741 , 14727026 , 66966508 , 893323568 , 580626399 , 3720676631 , 9099699104
n×2
56256170
n×3
84384255
n×4
112512340
n×5
140640425
n÷2
14064042.5
n÷3
9376028.3333333
n÷3
7032021.25
n÷5
5625617
n2
791189165767225
n3
2.225463610578E+22
n4
6.2598029602744E+29
n5
1.7607626974985E+37
2 √n
5303.5917075129
3 √n
304.12121853846
4 √n
72.825762663449
5 √n
30.890720157528
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
-28128084
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 28128085 can be divided by 4 positive divisors.
The sum of these divisors (counting 28128085) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101011010011001101010101
3
Ternary
1221221001110221
4
Quaternary
1223103031111
5
Quinary
24200044320
6
Senary
2442514341
8
Octal
153231525
10
Decimal
28128085
12
Duodecimal
95059b1
16
Hexadecimal
1ad3355
20
Vigesimal
8fg045
36
Base36
gqvrp
md5
a45aed104c61225855383f889a7583bb
sha1
43d341be388b76c1e16972741b4cefef8ef1e505
sha256
512be5167c86ec612a7bd76908888de20e51830f35585a9bafb84b0a3e160603
sha512
ede21ef10a3c5ce87475c0274660d9f009862405a907bf8c7aef6c391f3909239ec33c1db0c02441666ca9a18909202a1d0be09fb295e32ded40633e15f590ff
ripemd-160
47ecc75cdf16897381298b2312af5c0580ea87c6
Diameter
56256170
Circumference
176733970.3911
Area
2.4855940707742E+15
Volume
9.3220001730975E+22
Surface area
9.9423762830966E+15
Circumference
176733970.3911
Perimeter
112512340
Area
791189165767225
Diagonal
39779119.290583
Surface area
4747134994603350
Volume
2.225463610578E+22
Space diagonal
48719272.339616
Perimeter
84384255
Area
3.4259495837672E+14
Altitude
24359636.169808
Surface area
3.4259495837672E+14
Volume
2.622734017206E+21
Height
13259706.430194