2687921 is an odd 7-digits composite number following 2687920
and preceding 2687922 . In scientific notation, it is written as 2.687921 × 10^6.
The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors.
There are 2529792 positive integers (up to 2687921) that are relatively prime to 2687921.
2687921 has 4 divisors, whose sum is 2846052
The reverse of 2687921 is 1297862
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 35
Digital Root 8
Name
two million six hundred eighty-seven thousand nine hundred twenty-one
Scientific notation
2.687921 × 10^6
Engineering notation
2.687921 × 10^6
Prime Factorization
17 × 158113
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
2687921
Product of the distinct prime numbers
The prime factorization of 2687921 is 17 × 158113.
Since it has a total of 2 prime factors.
1 , 9 , 96 , 94 , 17 , 17 , 9079 , 6840 , 16537 , 15489 , 375310 , 657020 , 8176088 , 3991060 , 88352374 , 14894134 , 550423718 , 503252387 , 6721202300 , 1791668391
n×2
5375842
n×3
8063763
n×4
10751684
n×5
13439605
n÷2
1343960.5
n÷3
895973.66666667
n÷3
671980.25
n÷5
537584.2
n2
7224919302241
n3
1.9420012315799E+19
n4
5.2199458923895E+25
n5
1.4030802183017E+32
2 √n
1639.4880298435
3 √n
139.03970364866
4 √n
40.490591868278
5 √n
19.314492446021
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
-2687920
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 2687921 can be divided by 4 positive divisors.
The sum of these divisors (counting 2687921) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010010000001110110001
3
Ternary
12001120010122
4
Quaternary
22100032301
5
Quinary
1142003141
6
Senary
133340025
8
Octal
12201661
10
Decimal
2687921
12
Duodecimal
a97615
16
Hexadecimal
2903b1
20
Vigesimal
gfjg1
36
Base36
1lm0h
md5
2838339da1ccebfdcb074088aa328361
sha1
d5ca20a575544fa0e4c95d3573fc4e95055e1136
sha256
5ac77f60de531387f3582c2e9c39936832831b5405bc43d76f701ee1b861862b
sha512
080189b5cb31e979e5513942c84b4063a39188caccdb29543df538c8faa39269b016b0f821a31cee4fc375a2de47f1bc3eead8ce138fbf2bb1f940538200c982
ripemd-160
bb788686adfe7658fb7d4414afc41aadcebba2e5
Diameter
5375842
Circumference
16888705.734059
Area
22697753402699
Volume
8.134635736525E+19
Surface area
90791013610798
Circumference
16888705.734059
Perimeter
10751684
Area
7224919302241
Diagonal
3801294.3327875
Surface area
43349515813446
Volume
1.9420012315799E+19
Space diagonal
4655615.7387313
Perimeter
8063763
Area
3128481828016.6
Altitude
2327807.8693657
Surface area
3128481828016.6
Volume
2.2886703998713E+18
Height
1267098.1109292