21858081 is an odd 8-digits composite number following 21858080
and preceding 21858082 . In scientific notation, it is written as 2.1858081 × 10^7.
The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors.
There are 12490320 positive integers (up to 21858081) that are relatively prime to 21858081.
21858081 has 8 divisors, whose sum is 33307584
The reverse of 21858081 is 18085812
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6
Name
twenty-one million eight hundred fifty-eight thousand eighty-one
Scientific notation
2.1858081 × 10^7
Engineering notation
2.1858081 × 10^6
Prime Factorization
3 × 7 × 1040861
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21858081
Product of the distinct prime numbers
The prime factorization of 21858081 is 3 × 7 × 1040861.
Since it has a total of 3 prime factors.
5 , 7 , 45 , 81 , 893 , 573 , 6781 , 9885 , 86780 , 28242 , 891321 , 90241 , 9869026 , 2662954 , 39356471 , 11009127 , 388178254 , 765144124 , 643510648 , 4442779830
n×2
43716162
n×3
65574243
n×4
87432324
n×5
109290405
n÷2
10929040.5
n÷3
7286027
n÷3
5464520.25
n÷5
4371616.2
n2
477775705002561
n3
1.0443260059778E+22
n4
2.2826962429069E+29
n5
4.9895359375856E+36
2 √n
4675.2626664178
3 √n
279.6001136919
4 √n
68.375892435988
5 √n
29.371248397772
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
-21858080
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 21858081 can be divided by 8 positive divisors.
The sum of these divisors (counting 21858081) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010011011000011100100001
3
Ternary
1112010111122120
4
Quaternary
1103120130201
5
Quinary
21043424311
6
Senary
2100254453
8
Octal
123303441
10
Decimal
21858081
12
Duodecimal
73a1429
16
Hexadecimal
14d8721
20
Vigesimal
6gc541
36
Base36
d0hsx
md5
7f11f701394984b6c8257ff36889037e
sha1
eb60e65d9fe490079645cb46904e50971526e2f6
sha256
662cc5e9b1a375f5c1bd6f1ad9e1408a79dceceedb6650aed2c8747d8fb1e1b1
sha512
d2319723ad75b0a4a4f36613be97be040ad90f5b1556603ea76160b2a93d76794887e98224d3588cc56c1bad1f370240263fef39c4d1966849c5559ee199654d
ripemd-160
906ba6c7d222ce483940cfdfcaeae1a70c4851f0
Diameter
43716162
Circumference
137338373.38234
Area
1.5009766448997E+15
Volume
4.3744625444435E+22
Surface area
6.0039065795989E+15
Circumference
137338373.38234
Perimeter
87432324
Area
477775705002561
Diagonal
30911994.59765
Surface area
2866654230015366
Volume
1.0443260059778E+22
Space diagonal
37859306.847956
Perimeter
65574243
Area
2.0688294892162E+14
Altitude
18929653.423978
Surface area
2.0688294892162E+14
Volume
1.230750000994E+21
Height
10303998.199217