21493889 is an odd 8-digits prime number following 21493888
and preceding 21493890 . In scientific notation, it is written as 2.1493889 × 10^7.
The sum of its digits is 44. It has a total of 1 prime factors and 2 positive divisors.
There are 21493888 positive integers (up to 21493889) that are relatively prime to 21493889.
21493889 has 2 divisors, whose sum is 21493890
The reverse of 21493889 is 98839412
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 44 Digital Root 8
Name
twenty-one million four hundred ninety-three thousand eight hundred eighty-nine
Scientific notation
2.1493889 × 10^7
Engineering notation
2.1493889 × 10^6
Prime Factorization
21493889
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
21493889 Product of the distinct prime numbers
The prime factorization of 21493889 is 21493889.
Since it has a total of 1 prime factors.
9 , 5 , 93 , 51 , 155 , 678 , 5604 , 436 , 63742 , 18811 , 289557 , 451494 , 1054932 , 6363414 , 36287577 , 5570512 , 768522117 , 884442525 , 6446468517 , 8218769810
n×2
42987778
n×3
64481667
n×4
85975556
n×5
107469445
n÷2
10746944.5
n÷3
7164629.6666667
n÷3
5373472.25
n÷5
4298777.8
n2
461987264344321
n3
9.9299029792305E+21
n4
2.1343223241635E+29
n5
4.5874887125792E+36
2 √n4636.1502348392
3 √n278.03854079812
4 √n68.089281350586
5 √n29.272714722972
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
21493890 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
10746945 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4636.1503426873 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999069503 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21493889 can be divided by 2 positive divisors.
The sum of these divisors (counting 21493889) is 21493890, the average is 10746945.
Base
System
Value
2
Binary
1010001111111100010000001
3
Ternary
1111110000001222
4
Quaternary
1101333202001
5
Quinary
21000301024
6
Senary
2044404425
8
Octal
121774201
10
Decimal
21493889
12
Duodecimal
7246715
16
Hexadecimal
147f881
20
Vigesimal
6e6ee9
36
Base36
csosh
md5
4c8f40d63c23f01d951c4436c869bd6e
sha1
dcec664b5d1bbdc19879295b2c355b5329a2f570
sha256
910f20b4a8e04e943413dacb0cc4c03e0ea44d2fbc986f424b9c31b1bfaa557b
sha512
3f10f47028dcfdf8645ff78d41a115ac215a4b6bfa245f17b9754c7f7a6a9f9b9ec83c1634d6af112457646d7d0991474fe4e9de82794cdbc759f7f0ed226c7c
ripemd-160
6fde4f9b0ad6bd467c37f8cdd74d36a03703ff30
Diameter
42987778
Circumference
135050087.55895
Area
1.4513757957162E+15
Volume
4.159428033388E+22
Surface area
5.8055031828647E+15
Circumference
135050087.55895
Perimeter
85975556
Area
461987264344321
Diagonal
30396949.331942
Surface area
2771923586065926
Volume
9.9299029792305E+21
Space diagonal
37228507.800246
Perimeter
64481667
Area
2.0004635357353E+14
Altitude
18614253.900123
Surface area
2.0004635357353E+14
Volume
1.1702502888564E+21
Height
10132316.443981