12981785 is an odd 8-digits composite number following 12981784
and preceding 12981786 . In scientific notation, it is written as 1.2981785 × 10^7.
The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors.
There are 10356784 positive integers (up to 12981785) that are relatively prime to 12981785.
12981785 has 8 divisors, whose sum is 15621120
The reverse of 12981785 is 58718921
Previous prime number is 6779
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 41
Digital Root 5
Name
twelve million nine hundred eighty-one thousand seven hundred eighty-five
Scientific notation
1.2981785 × 10^7
Engineering notation
1.2981785 × 10^6
Prime Factorization
5 × 6779 × 383
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
12981785
Product of the distinct prime numbers
The prime factorization of 12981785 is 5 × 6779 × 383.
Since it has a total of 3 prime factors.
9 , 1 , 11 , 39 , 655 , 694 , 8211 , 354 , 13707 , 43283 , 210617 , 321552 , 2035621 , 662100 , 37271309 , 75621498 , 528873998 , 472366401 , 6274261524 , 5928465086
n×2
25963570
n×3
38945355
n×4
51927140
n×5
64908925
n÷2
6490892.5
n÷3
4327261.6666667
n÷3
3245446.25
n÷5
2596357
n2
168526741786225
n3
2.1877779286193E+21
n4
2.8401262697081E+28
n5
3.6869908606203E+35
2 √n
3603.0244240083
3 √n
235.02359805278
4 √n
60.02519824214
5 √n
26.464694344226
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
-12981784
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 12981785 can be divided by 8 positive divisors.
The sum of these divisors (counting 12981785) is 1, the average is 0.125.
Base
System
Value
2
Binary
110001100001011000011001
3
Ternary
220102112122212
4
Quaternary
301201120121
5
Quinary
11310404120
6
Senary
1142124505
8
Octal
61413031
10
Decimal
12981785
12
Duodecimal
4420735
16
Hexadecimal
c61619
20
Vigesimal
412e95
36
Base36
7q8t5
md5
0385c6f2e0b8017d263201f606d14fea
sha1
cd8fd17c982ac333ee0c4e3ce3b90ca2cab93706
sha256
8c6c68ca38ce7dfa77a8df8fd24330073836652fcd389712d11c31af77d35764
sha512
7d3e01456b3cc3cb7e465b31fb69b8b9b5ced72717cf62056a63eab62ee695fc9d38213eeb33b353482b66c26880a2b82b5a3f85a7d26be14bfeb0315db1b7ee
ripemd-160
cb98069b7a0bc9009c6c54018091a0445d3196c8
Diameter
25963570
Circumference
81566960.772964
Area
5.2944237392903E+14
Volume
9.1641427576483E+21
Surface area
2.1177694957161E+15
Circumference
81566960.772964
Perimeter
51927140
Area
168526741786225
Diagonal
18359016.410812
Surface area
1011160450717350
Volume
2.1877779286193E+21
Space diagonal
22485111.192936
Perimeter
38945355
Area
72974219801946
Altitude
11242555.596468
Surface area
72974219801946
Volume
2.5783210150949E+20
Height
6119672.1369372