21493885 is an odd 8-digits composite number following 21493884
and preceding 21493886 . In scientific notation, it is written as 2.1493885 × 10^7.
The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors.
There are 14459328 positive integers (up to 21493885) that are relatively prime to 21493885.
21493885 has 8 divisors, whose sum is 22527072
The reverse of 21493885 is 58839412
Previous prime number is 53
Is Prime? no Number parity odd Number length 8 Sum of Digits 40 Digital Root 4
Name
twenty-one million four hundred ninety-three thousand eight hundred eighty-five
Scientific notation
2.1493885 × 10^7
Engineering notation
2.1493885 × 10^6
Prime Factorization
35 × 53 × 11587
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
21493885 Product of the distinct prime numbers
The prime factorization of 21493885 is 35 × 53 × 11587.
Since it has a total of 3 prime factors.
5 , 5 , 82 , 12 , 901 , 624 , 6385 , 9212 , 81290 , 64583 , 532079 , 520477 , 2782589 , 4723688 , 84925324 , 73340124 , 496457902 , 155202521 , 3600415246 , 7032819079
n×2
42987770
n×3
64481655
n×4
85975540
n×5
107469425
n÷2
10746942.5
n÷3
7164628.3333333
n÷3
5373471.25
n÷5
4298777
n2
461987092393225
n3
9.9298974353844E+21
n4
2.1343207353795E+29
n5
4.5874844439362E+36
2 √n4636.1498034468
3 √n278.03852355051
4 √n68.089278182742
5 √n29.272713633445
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
-21493884 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 21493885 can be divided by 8 positive divisors.
The sum of these divisors (counting 21493885) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010001111111100001111101
3
Ternary
1111110000001211
4
Quaternary
1101333201331
5
Quinary
21000301020
6
Senary
2044404421
8
Octal
121774175
10
Decimal
21493885
12
Duodecimal
7246711
16
Hexadecimal
147f87d
20
Vigesimal
6e6ee5
36
Base36
csosd
md5
f6d2f5c88f44f7ef87ed6ef5d59d9f81
sha1
6883dee28a833dba1c3551fe796e4f5f203170b2
sha256
a533aba642425494356081104ecc8db01471ac910592d19a5bfeab2b9885f819
sha512
b9ee2488fc2c6e1cea7a1e2325a285efc19db1496342c2ee3fb2654f1b867743b110690e9b1e128334a1cfc1698eec172c87659be3b87fe14709f8086081cb4e
ripemd-160
e9e9e717fcf1d431b404628a3d983e5c236703dc
Diameter
42987770
Circumference
135050062.42621
Area
1.4513752555159E+15
Volume
4.1594257111871E+22
Surface area
5.8055010220635E+15
Circumference
135050062.42621
Perimeter
85975540
Area
461987092393225
Diagonal
30396943.675088
Surface area
2771922554359350
Volume
9.9298974353844E+21
Space diagonal
37228500.872043
Perimeter
64481655
Area
2.0004627911652E+14
Altitude
18614250.436021
Surface area
2.0004627911652E+14
Volume
1.1702496355079E+21
Height
10132314.558363