21490864 is an even 8-digits composite number following 21490863
and preceding 21490865 . In scientific notation, it is written as 2.1490864 × 10^7.
The sum of its digits is 34. It has a total of 6 prime factors and 20 positive divisors.
There are 10542272 positive integers (up to 21490864) that are relatively prime to 21490864.
21490864 has 20 divisors, whose sum is 42425856
The reverse of 21490864 is 46809412
Previous prime number is 53
Is Prime? no
Number parity even
Number length 8
Sum of Digits 34
Digital Root 7
Name
twenty-one million four hundred ninety thousand eight hundred sixty-four
Scientific notation
2.1490864 × 10^7
Engineering notation
2.1490864 × 10^6
Prime Factorization
2 × 2 × 2 × 2 × 53 × 25343
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
2686358
Product of the distinct prime numbers
The prime factorization of 21490864 is 2 × 2 × 2 × 2 × 53 × 25343.
Since it has a total of 6 prime factors.
9 , 2 , 50 , 66 , 702 , 599 , 8019 , 3529 , 77945 , 99598 , 255709 , 349487 , 6611778 , 7059509 , 53888289 , 29868907 , 608809117 , 115709723 , 5442587086 , 5291754180
n×2
42981728
n×3
64472592
n×4
85963456
n×5
107454320
n÷2
10745432
n÷3
7163621.3333333
n÷3
5372716
n÷5
4298172.8
n2
461857235466496
n3
9.9257110348264E+21
n4
2.1331210595275E+29
n5
4.5842614585842E+36
2 √n
4635.8239828535
3 √n
278.02549668675
4 √n
68.086885542324
5 √n
29.271890721812
1 , 2 , 4 , 8 , 16 , 53 , 106 , 212 , 424 , 848 , 25343 , 50686 , 101372 , 202744 , 405488 , 1343179 , 2686358 , 5372716 , 10745432 , 21490864
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21490863
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21490864 can be divided by 20 positive divisors.
The sum of these divisors (counting 21490864) is 1, the average is 0.05.
Base
System
Value
2
Binary
1010001111110110010110000
3
Ternary
1111102211220221
4
Quaternary
1101332302300
5
Quinary
21000201424
6
Senary
2044342424
8
Octal
121766260
10
Decimal
21490864
12
Duodecimal
7244a14
16
Hexadecimal
147ecb0
20
Vigesimal
6e6734
36
Base36
csmgg
md5
2fd1ed65cd36150e5c09f533cdef5ca5
sha1
f0f81383f2a72d6e5d9b60c592e2425fb6901046
sha256
74f390b2bd3d449ee2467b91d813300e791040a889343f6cb90980dacb7b8227
sha512
c54f13ffc0a46cce9e1ed587fd4b6d3665482fc0035bafa5436f599f1761360c53ea2fe18953b236a52128761bd4eb2809e610d0976501b06dd741a816a329e8
ripemd-160
1cb134e86c59ef1cfaa9cc9699963587e0785dc5
Diameter
42981728
Circumference
135031080.92339
Area
1.4509672979488E+15
Volume
4.1576721158221E+22
Surface area
5.8038691917953E+15
Circumference
135031080.92339
Perimeter
85963456
Area
461857235466496
Diagonal
30392671.335916
Surface area
2771143412798976
Volume
9.9257110348264E+21
Space diagonal
37223268.346553
Perimeter
64472592
Area
1.9999004941782E+14
Altitude
18611634.173276
Surface area
1.9999004941782E+14
Volume
1.1697562634707E+21
Height
10130890.445305