12978985 is an odd 8-digits composite number following 12978984
and preceding 12978986 . In scientific notation, it is written as 1.2978985 × 10^7.
The sum of its digits is 49. It has a total of 3 prime factors and 8 positive divisors.
There are 10354944 positive integers (up to 12978985) that are relatively prime to 12978985.
12978985 has 8 divisors, whose sum is 15617160
The reverse of 12978985 is 58987921
Previous prime number is 389
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 49
Digital Root 4
Name
twelve million nine hundred seventy-eight thousand nine hundred eighty-five
Scientific notation
1.2978985 × 10^7
Engineering notation
1.2978985 × 10^6
Prime Factorization
5 × 389 × 6673
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
12978985
Product of the distinct prime numbers
The prime factorization of 12978985 is 5 × 389 × 6673.
Since it has a total of 3 prime factors.
4 , 8 , 41 , 69 , 126 , 789 , 3991 , 3357 , 11585 , 61805 , 843795 , 142484 , 975359 , 5904798 , 9653779 , 86904060 , 674093745 , 706446802 , 6610443653 , 6816286649
n×2
25957970
n×3
38936955
n×4
51915940
n×5
64894925
n÷2
6489492.5
n÷3
4326328.3333333
n÷3
3244746.25
n÷5
2595797
n2
168454051630225
n3
2.1863626092979E+21
n4
2.8376767510639E+28
n5
3.6830163986906E+35
2 √n
3602.6358406034
3 √n
235.00669967319
4 √n
60.021961319199
5 √n
26.463552628537
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
-12978984
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 12978985 can be divided by 8 positive divisors.
The sum of these divisors (counting 12978985) is 1, the average is 0.125.
Base
System
Value
2
Binary
110001100000101100101001
3
Ternary
220102101211011
4
Quaternary
301200230221
5
Quinary
11310311420
6
Senary
1142103521
8
Octal
61405451
10
Decimal
12978985
12
Duodecimal
441aba1
16
Hexadecimal
c60b29
20
Vigesimal
412795
36
Base36
7q6nd
md5
4dc064a41aefd1953218b05a528677d3
sha1
8652628bc9baf90fe2f026f5f6561e2dcd091050
sha256
f419a9beee72b4634a58f240cb1d524c131c48b2b6a5f4c349eb2b5e36793764
sha512
69be32c9c8fa6d6159a0b43cbcdd3a88525e416ec0b9bc6ec1eb674bbdbad83bb40f4f9bbd156cb628cbcd3efa20b1f2f609ed8d1a0d8cb1e51cec45a0d62922
ripemd-160
34acd3b6d749a28d69615c9bccfabe17a93b5fbc
Diameter
25957970
Circumference
81549367.854104
Area
5.2921401106895E+14
Volume
9.1582142819383E+21
Surface area
2.1168560442758E+15
Circumference
81549367.854104
Perimeter
51915940
Area
168454051630225
Diagonal
18355056.612837
Surface area
1010724309781350
Volume
2.1863626092979E+21
Space diagonal
22480261.450674
Perimeter
38936955
Area
72942744041095
Altitude
11240130.725337
Surface area
72942744041095
Volume
2.5766530452788E+20
Height
6118352.204279