21491838 is an even 8-digits composite number following 21491837
and preceding 21491839 . In scientific notation, it is written as 2.1491838 × 10^7.
The sum of its digits is 36. It has a total of 5 prime factors and 32 positive divisors.
There are 7136640 positive integers (up to 21491838) that are relatively prime to 21491838.
21491838 has 32 divisors, whose sum is 47941920
The reverse of 21491838 is 83819412
Previous prime number is 337
Is Prime? no
Number parity even
Number length 8
Sum of Digits 36
Digital Root 9
Name
twenty-one million four hundred ninety-one thousand eight hundred thirty-eight
Scientific notation
2.1491838 × 10^7
Engineering notation
2.1491838 × 10^6
Prime Factorization
2 × 9 × 3 × 337 × 1181
Composite number
ω
Distinct Factors
5
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
21491838
Product of the distinct prime numbers
The prime factorization of 21491838 is 2 × 9 × 3 × 337 × 1181.
Since it has a total of 5 prime factors.
3 , 9 , 14 , 19 , 919 , 708 , 7035 , 3352 , 36305 , 61508 , 86043 , 665576 , 2701388 , 6449084 , 67228223 , 40077849 , 947925313 , 756580378 , 3333669717 , 1739088457
n×2
42983676
n×3
64475514
n×4
85967352
n×5
107459190
n÷2
10745919
n÷3
7163946
n÷3
5372959.5
n÷5
4298367.6
n2
461899100618244
n3
9.927060642833E+21
n4
2.1335077915194E+29
n5
4.5853003827073E+36
2 √n
4635.9290331065
3 √n
278.02969680861
4 √n
68.08765698059
5 √n
29.272156046693
1 , 2 , 3 , 6 , 9 , 18 , 27 , 54 , 337 , 674 , 1011 , 1181 , 2022 , 2362 , 3033 , 3543 , 6066 , 7086 , 9099 , 10629 , 18198 , 21258 , 31887 , 63774 , 397997 , 795994 , 1193991 , 2387982 , 3581973 , 7163946 , 10745919 , 21491838
32 divisors
τ
Total Divisors
32
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21491837
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.03125
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
32
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21491838 can be divided by 32 positive divisors.
The sum of these divisors (counting 21491838) is 1, the average is 0.03125.
Base
System
Value
2
Binary
1010001111111000001111110
3
Ternary
1111102220021000
4
Quaternary
1101333001332
5
Quinary
21000214323
6
Senary
2044351130
8
Octal
121770176
10
Decimal
21491838
12
Duodecimal
72454a6
16
Hexadecimal
147f07e
20
Vigesimal
6e69bi
36
Base36
csn7i
md5
9a3b509801503dcd97cb5a52aa007143
sha1
b03e185876e924e3b72fc26bd99154e8471806f1
sha256
10240da842fb1acba65dd5506a3cfb3655cd6f191ba2f6a3d42c86be15caafc9
sha512
92cf50122f3a25d1d83cebe960f23070c1545e539ebf5f748d9a425713fcc29ad3cee1495c78f9695c41e6075550d9b8e2466b9806f9ee6825282ab70d2ebf50
ripemd-160
cb642280fa9f366048e653caba98309f2ed1155d
Diameter
42983676
Circumference
135037200.74588
Area
1.451098821202E+15
Volume
4.1582374383019E+22
Surface area
5.804395284808E+15
Circumference
135037200.74588
Perimeter
85967352
Area
461899100618244
Diagonal
30394048.779925
Surface area
2771394603709464
Volume
9.927060642833E+21
Space diagonal
37224955.364039
Perimeter
64475514
Area
2.0000817756029E+14
Altitude
18612477.68202
Surface area
2.0000817756029E+14
Volume
1.1699153162996E+21
Height
10131349.593308