21553890 is an even 8-digits composite number following 21553889
and preceding 21553891 . In scientific notation, it is written as 2.1553890 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 5747696 positive integers (up to 21553890) that are relatively prime to 21553890.
21553890 has 8 divisors, whose sum is 34486272
The reverse of 21553890 is 09835512
Previous prime number is 15
Is Prime? no
Number parity even
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-one million five hundred fifty-three thousand eight hundred ninety
Scientific notation
2.1553890 × 10^7
Engineering notation
2.1553890 × 10^6
Prime Factorization
2 × 15 × 718463
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21553890
Product of the distinct prime numbers
The prime factorization of 21553890 is 2 × 15 × 718463.
Since it has a total of 3 prime factors.
10 , 7 , 85 , 51 , 314 , 670 , 692 , 9504 , 87324 , 63502 , 835856 , 572415 , 8562751 , 2047177 , 48591666 , 19762274 , 575813303 , 463898041 , 5174446756 , 8923473543
n×2
43107780
n×3
64661670
n×4
86215560
n×5
107769450
n÷2
10776945
n÷3
7184630
n÷3
5388472.5
n÷5
4310778
n2
464570174132100
n3
1.0013294430524E+22
n4
2.1582544669313E+29
n5
4.6518779372246E+36
2 √n
4642.6167190497
3 √n
278.29701878003
4 √n
68.136750135663
5 √n
29.289039681389
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
-21553889
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 21553890 can be divided by 8 positive divisors.
The sum of these divisors (counting 21553890) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010010001110001011100010
3
Ternary
1111120001101020
4
Quaternary
1102032023202
5
Quinary
21004211030
6
Senary
2045550310
8
Octal
122161342
10
Decimal
21553890
12
Duodecimal
7275396
16
Hexadecimal
148e2e2
20
Vigesimal
6ee4ea
36
Base36
ctz36
md5
14e816c0ef5c614f37b200d7c8251e1a
sha1
ec8d63c3673f5f6907d8c86ee5bf18fccca6afe1
sha256
09ffb6d36fcbf873e5a5e40454319aa185140aa9d74a0642fdd01758681b0cf4
sha512
3f60803772f6ad4f1dd9e995f3b292070843d669e447094615daf5b0571cd923741c96f534f5d430fb83b5b561692749abe014a2c7d6391555db91959ace660e
ripemd-160
1f6c4621f4315acd6ee7975c246e66c87b70cd76
Diameter
43107780
Circumference
135427084.96057
Area
1.4594902461303E+15
Volume
4.1943589628222E+22
Surface area
5.8379609845213E+15
Circumference
135427084.96057
Perimeter
86215560
Area
464570174132100
Diagonal
30481803.559898
Surface area
2787421044792600
Volume
1.0013294430524E+22
Space diagonal
37332432.580751
Perimeter
64661670
Area
2.0116478631948E+14
Altitude
18666216.290375
Surface area
2.0116478631948E+14
Volume
1.1800780656402E+21
Height
10160601.186633