28986985 is an odd 8-digits composite number following 28986984
and preceding 28986986 . In scientific notation, it is written as 2.8986985 × 10^7.
The sum of its digits is 55. It has a total of 2 prime factors and 4 positive divisors.
There are 23189584 positive integers (up to 28986985) that are relatively prime to 28986985.
28986985 has 4 divisors, whose sum is 34784388
The reverse of 28986985 is 58968982
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 55
Digital Root 1
Name
twenty-eight million nine hundred eighty-six thousand nine hundred eighty-five
Scientific notation
2.8986985 × 10^7
Engineering notation
2.8986985 × 10^6
Prime Factorization
5 × 5797397
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28986985
Product of the distinct prime numbers
The prime factorization of 28986985 is 5 × 5797397.
Since it has a total of 2 prime factors.
3 , 6 , 20 , 80 , 939 , 98 , 1459 , 8320 , 98820 , 62289 , 551196 , 859848 , 9505797 , 5202441 , 49321683 , 2529218 , 568971407 , 450522633 , 1328172587 , 1136902615
n×2
57973970
n×3
86960955
n×4
115947940
n×5
144934925
n÷2
14493492.5
n÷3
9662328.3333333
n÷3
7246746.25
n÷5
5797397
n2
840245299390225
n3
2.4356177889745E+22
n4
7.0601216314737E+29
n5
2.046516398297E+37
2 √n
5383.9562591091
3 √n
307.18571453775
4 √n
73.375447249806
5 √n
31.07710886534
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
-28986984
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 28986985 can be divided by 4 positive divisors.
The sum of these divisors (counting 28986985) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101110100100111001101001
3
Ternary
2000112200200001
4
Quaternary
1232210321221
5
Quinary
24410040420
6
Senary
2513143001
8
Octal
156447151
10
Decimal
28986985
12
Duodecimal
985aa61
16
Hexadecimal
1ba4e69
20
Vigesimal
913795
36
Base36
h9ai1
md5
37dedfb0e75c9b991eb7156fbe042a22
sha1
7a1cb89a7ee8686c5eb53860fb0a0b62203a0801
sha256
0d245ec61408eed0facde9b33f8384e01e1ef31b381845607c0dc7d8d565b2b3
sha512
dd6b4175ac19f77053d5ff6f6f46acaa9a71e7694305e77e58799d70849fd3877859d99f320fa0fa2a3ca11fa0223aadca31fbfa2e6f92d91e44a34007c71df0
ripemd-160
2e222d997000021fdfb98c1617e91f56d2575440
Diameter
57973970
Circumference
182130598.25144
Area
2.6397084597777E+15
Volume
1.020229193706E+23
Surface area
1.0558833839111E+16
Circumference
182130598.25144
Perimeter
115947940
Area
840245299390225
Diagonal
40993787.319305
Surface area
5041471796341350
Volume
2.4356177889745E+22
Space diagonal
50206930.778237
Perimeter
86960955
Area
3.638368873412E+14
Altitude
25103465.389118
Surface area
3.638368873412E+14
Volume
2.8704030916041E+21
Height
13664595.773102