21691486 is an even 8-digits composite number following 21691485
and preceding 21691487 . In scientific notation, it is written as 2.1691486 × 10^7.
The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors.
There are 10836768 positive integers (up to 21691486) that are relatively prime to 21691486.
21691486 has 8 divisors, whose sum is 32564160
The reverse of 21691486 is 68419612
Previous prime number is 1439
Is Prime? no
Number parity even
Number length 8
Sum of Digits 37
Digital Root 1
Name
twenty-one million six hundred ninety-one thousand four hundred eighty-six
Scientific notation
2.1691486 × 10^7
Engineering notation
2.1691486 × 10^6
Prime Factorization
2 × 1439 × 7537
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21691486
Product of the distinct prime numbers
The prime factorization of 21691486 is 2 × 1439 × 7537.
Since it has a total of 3 prime factors.
8 , 10 , 39 , 78 , 235 , 221 , 6794 , 2098 , 66958 , 4096 , 744470 , 569116 , 2491156 , 5882990 , 81537379 , 23000131 , 438652048 , 501650218 , 3979494036 , 5561031115
n×2
43382972
n×3
65074458
n×4
86765944
n×5
108457430
n÷2
10845743
n÷3
7230495.3333333
n÷3
5422871.5
n÷5
4338297.2
n2
470520564888196
n3
1.0206290245984E+22
n4
2.2138960198271E+29
n5
4.8022694519535E+36
2 √n
4657.4119422701
3 √n
278.88796176354
4 √n
68.245233842885
5 √n
29.32633970565
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
-21691485
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 21691486 can be divided by 8 positive divisors.
The sum of these divisors (counting 21691486) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010101111110001011110
3
Ternary
1111211001010101
4
Quaternary
1102233301132
5
Quinary
21023111421
6
Senary
2052531314
8
Octal
122576136
10
Decimal
21691486
12
Duodecimal
7320b3a
16
Hexadecimal
14afc5e
20
Vigesimal
6fb8e6
36
Base36
cwx9a
md5
cdfabe6f98b68e91bccc5e01e25b102f
sha1
bada970179dacba3dbb1891307c837a38dce6fa0
sha256
8e760e32b23ffe239da6cadfb7d2af3e6076677a66fc6d0bc012c26ca45bd823
sha512
f7d7000b3c857949d29d661e1c26e8022040f39967dfe6898de6b211681799fa9867924baf6bc21e618feaf7d30735d883e2ff7f5157b7885bcfe4721d275720
ripemd-160
8ebddc2d5a7de7bf3affc130d9cb255b7448cdd4
Diameter
43382972
Circumference
136291626.12609
Area
1.4781839500157E+15
Volume
4.2752008609586E+22
Surface area
5.9127358000627E+15
Circumference
136291626.12609
Perimeter
86765944
Area
470520564888196
Diagonal
30676393.689226
Surface area
2823123389329176
Volume
1.0206290245984E+22
Space diagonal
37570755.843669
Perimeter
65074458
Area
2.0374138109809E+14
Altitude
18785377.921834
Surface area
2.0374138109809E+14
Volume
1.2028228406156E+21
Height
10225464.563075