2781421 is an odd 7-digits composite number following 2781420
and preceding 2781422 . In scientific notation, it is written as 2.781421 × 10^6.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 2617792 positive integers (up to 2781421) that are relatively prime to 2781421.
2781421 has 4 divisors, whose sum is 2945052
The reverse of 2781421 is 1241872
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 25
Digital Root 7
Name
two million seven hundred eighty-one thousand four hundred twenty-one
Scientific notation
2.781421 × 10^6
Engineering notation
2.781421 × 10^6
Prime Factorization
17 × 163613
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
2781421
Product of the distinct prime numbers
The prime factorization of 2781421 is 17 × 163613.
Since it has a total of 2 prime factors.
1 , 10 , 55 , 15 , 708 , 487 , 8326 , 7335 , 76552 , 67903 , 608676 , 952770 , 176899 , 2776334 , 24056479 , 67179232 , 726358661 , 873416849 , 8794965019 , 4797441488
n×2
5562842
n×3
8344263
n×4
11125684
n×5
13907105
n÷2
1390710.5
n÷3
927140.33333333
n÷3
695355.25
n÷5
556284.2
n2
7736302779241
n3
2.1517915012539E+19
n4
5.9850380692092E+25
n5
1.6646910571498E+32
2 √n
1667.7592751953
3 √n
140.63354028791
4 √n
40.838208520885
5 √n
19.44703276254
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
-2781420
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 2781421 can be divided by 4 positive divisors.
The sum of these divisors (counting 2781421) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010100111000011101101
3
Ternary
12020022101121
4
Quaternary
22213003231
5
Quinary
1203001141
6
Senary
135340541
8
Octal
12470355
10
Decimal
2781421
12
Duodecimal
b21751
16
Hexadecimal
2a70ed
20
Vigesimal
h7db1
36
Base36
1nm5p
md5
b660b6895ab945516ca7157e654824f6
sha1
d74499f4eee2090ba9d1afb1fa9e399b0417fdea
sha256
026a7025918f1fd2f115b0905b191232731b3a652f31df0a154667bbe4bd9fd8
sha512
dd55956a0d868a9287ac3fbf9fd98a3fda83ba103b74f7645085af8f4a1678f1907ca5be475797f2d9dd45473a7d6e876341cb7dd23d266bdee00f48c19ca1fb
ripemd-160
2684be333a8afa307bc7f7e257133dca0e85b791
Diameter
5562842
Circumference
17476183.560281
Area
24304311977210
Volume
9.0134031631951E+19
Surface area
97217247908839
Circumference
17476183.560281
Perimeter
11125684
Area
7736302779241
Diagonal
3933523.3008693
Surface area
46417816675446
Volume
2.1517915012539E+19
Space diagonal
4817562.489239
Perimeter
8344263
Area
3349917369095.4
Altitude
2408781.2446195
Surface area
3349917369095.4
Volume
2.5359106037271E+18
Height
1311174.4336231