12821985 is an odd 8-digits composite number following 12821984
and preceding 12821986 . In scientific notation, it is written as 1.2821985 × 10^7.
The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors.
There are 6216480 positive integers (up to 12821985) that are relatively prime to 12821985.
12821985 has 8 divisors, whose sum is 14506240
The reverse of 12821985 is 58912821
Previous prime number is 55
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9
Name
twelve million eight hundred twenty-one thousand nine hundred eighty-five
Scientific notation
1.2821985 × 10^7
Engineering notation
1.2821985 × 10^6
Prime Factorization
9 × 55 × 25903
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
12821985
Product of the distinct prime numbers
The prime factorization of 12821985 is 9 × 55 × 25903.
Since it has a total of 3 prime factors.
9 , 10 , 85 , 19 , 590 , 54 , 4367 , 5890 , 95904 , 60562 , 308443 , 512865 , 9374532 , 3350177 , 77261034 , 8809759 , 565153957 , 123187317 , 6130310738 , 9597958252
n×2
25643970
n×3
38465955
n×4
51287940
n×5
64109925
n÷2
6410992.5
n÷3
4273995
n÷3
3205496.25
n÷5
2564397
n2
164403299340225
n3
2.1079766380909E+21
n4
2.7028444833952E+28
n5
3.4655831423426E+35
2 √n
3580.7799429733
3 √n
234.05526855804
4 √n
59.839618506248
5 √n
26.399217425327
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
-12821984
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 12821985 can be divided by 8 positive divisors.
The sum of these divisors (counting 12821985) is 1, the average is 0.125.
Base
System
Value
2
Binary
110000111010010111100001
3
Ternary
220010102110100
4
Quaternary
300322113201
5
Quinary
11240300420
6
Senary
1134453013
8
Octal
60722741
10
Decimal
12821985
12
Duodecimal
4364169
16
Hexadecimal
c3a5e1
20
Vigesimal
402ej5
36
Base36
7mti9
md5
a786ce85773a65ee08c8cf568d454af8
sha1
ea8d52e9bdf5e1136c403f4242c548828b924094
sha256
fea11b37b02aca0a700aef6dda27cbfd75ad092ef29ec7a09c933cc9f75036ca
sha512
4b20620b253c3eb52b274acb2d32ffff97f38590043527876d3d73a763f4de591fe0aa002a8eec1bedd7059e49a9e5cea5e6102ea3c099f4c0c0ced5c128ba60
ripemd-160
7c57fd6f9551e782ca0799879ca2388ae6dcd0f3
Diameter
25643970
Circumference
80562907.760877
Area
5.1648819743317E+14
Volume
8.8298718935536E+21
Surface area
2.0659527897327E+15
Circumference
80562907.760877
Perimeter
51287940
Area
164403299340225
Diagonal
18133025.083544
Surface area
986419796041350
Volume
2.1079766380909E+21
Space diagonal
22208329.473886
Perimeter
38465955
Area
71188716847306
Altitude
11104164.736943
Surface area
71188716847306
Volume
2.4842742922948E+20
Height
6044341.6945148