21492687 is an odd 8-digits composite number following 21492686
and preceding 21492688 . In scientific notation, it is written as 2.1492687 × 10^7.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 14298968 positive integers (up to 21492687) that are relatively prime to 21492687.
21492687 has 8 divisors, whose sum is 28715904
The reverse of 21492687 is 78629412
Previous prime number is 503
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty-one million four hundred ninety-two thousand six hundred eighty-seven
Scientific notation
2.1492687 × 10^7
Engineering notation
2.1492687 × 10^6
Prime Factorization
3 × 503 × 14243
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21492687
Product of the distinct prime numbers
The prime factorization of 21492687 is 3 × 503 × 14243.
Since it has a total of 3 prime factors.
7 , 3 , 60 , 92 , 854 , 349 , 384 , 138 , 26994 , 61318 , 302055 , 241039 , 1467290 , 5861377 , 97220189 , 24559686 , 827991297 , 646014618 , 2878154995 , 834444640
n×2
42985374
n×3
64478061
n×4
85970748
n×5
107463435
n÷2
10746343.5
n÷3
7164229
n÷3
5373171.75
n÷5
4298537.4
n2
461935594479969
n3
9.9282371463169E+21
n4
2.1338449344756E+29
n5
4.586206128322E+36
2 √n
4636.0205996091
3 √n
278.03335779694
4 √n
68.088329393583
5 √n
29.272387312793
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
-21492686
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 21492687 can be divided by 8 positive divisors.
The sum of these divisors (counting 21492687) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001111111001111001111
3
Ternary
1111102221102110
4
Quaternary
1101333033033
5
Quinary
21000231222
6
Senary
2044355103
8
Octal
121771717
10
Decimal
21492687
12
Duodecimal
7245a93
16
Hexadecimal
147f3cf
20
Vigesimal
6e6be7
36
Base36
csnv3
md5
f238d83174f56291ecfea58a4789927d
sha1
c782d9712f7bf8ae339d78bf8205f3f492d62c88
sha256
e838a54224860cfd56a6dc0994bc6890442bd30faa36da71ef3396be0ca8ef74
sha512
594a38c1e627f479f0a33998c8cc74631f0db76f8862b565e0e272d43f7242c8fbbd3dd1686cb656d7a44cba4a8b59cc64c94d71d369eb4ba9397cd639058569
ripemd-160
e1736a1a42f47560ff18808cc8e9a2abb212f389
Diameter
42985374
Circumference
135042535.17021
Area
1.4512134700499E+15
Volume
4.1587302509289E+22
Surface area
5.8048538801996E+15
Circumference
135042535.17021
Perimeter
85970748
Area
461935594479969
Diagonal
30395249.44724
Surface area
2771613566879814
Volume
9.9282371463169E+21
Space diagonal
37226425.875175
Perimeter
64478061
Area
2.0002397986596E+14
Altitude
18613212.937588
Surface area
2.0002397986596E+14
Volume
1.1700539685648E+21
Height
10131749.815747