21123885 is an odd 8-digits composite number following 21123884
and preceding 21123886 . In scientific notation, it is written as 2.1123885 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 11235840 positive integers (up to 21123885) that are relatively prime to 21123885.
21123885 has 8 divisors, whose sum is 22592640
The reverse of 21123885 is 58832112
Previous prime number is 419
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty-one million one hundred twenty-three thousand eight hundred eighty-five
Scientific notation
2.1123885 × 10^7
Engineering notation
2.1123885 × 10^6
Prime Factorization
15 × 419 × 3361
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21123885
Product of the distinct prime numbers
The prime factorization of 21123885 is 15 × 419 × 3361.
Since it has a total of 3 prime factors.
6 , 3 , 51 , 43 , 713 , 529 , 5910 , 3063 , 66643 , 17925 , 756476 , 698493 , 1130192 , 2823685 , 20725801 , 39864359 , 496475193 , 776525942 , 9782029741 , 9423724286
n×2
42247770
n×3
63371655
n×4
84495540
n×5
105619425
n÷2
10561942.5
n÷3
7041295
n÷3
5280971.25
n÷5
4224777
n2
446218517493225
n3
9.4258686483974E+21
n4
1.9911096535385E+29
n5
4.2059971343737E+36
2 √n
4596.0727801026
3 √n
276.43387702132
4 √n
67.794341800054
5 √n
29.171231171217
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
-21123884
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 21123885 can be divided by 8 positive divisors.
The sum of these divisors (counting 21123885) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000100101001100101101
3
Ternary
1110202012112010
4
Quaternary
1100211030231
5
Quinary
20401431020
6
Senary
2032431433
8
Octal
120451455
10
Decimal
21123885
12
Duodecimal
70a8579
16
Hexadecimal
142532d
20
Vigesimal
6c09e5
36
Base36
ckral
md5
2cc52e36d52fbe71905af101c1d2adb5
sha1
d930c82dd2a27a17242b22f89e9d3228cc476b33
sha256
5bc63971b6d72450235843e40e78fb50f7dc3f3e9a51fb69171f092c8f60d761
sha512
8117bedc24e9962becba9b9a28b8ce919bb92b1baaf2f6645c5fa69011c901ebdfbebe0ae62643de9f55f9eb788e9367a9840c3bfd7432df2d0b8ceb73907185
ripemd-160
4d7b89798b3db052cb65ba8ccbabcefe5a9adb4c
Diameter
42247770
Circumference
132725283.86255
Area
1.4018368164524E+15
Volume
3.948298626601E+22
Surface area
5.6073472658098E+15
Circumference
132725283.86255
Perimeter
84495540
Area
446218517493225
Diagonal
29873684.65701
Surface area
2677311104959350
Volume
9.4258686483974E+21
Space diagonal
36587642.073242
Perimeter
63371655
Area
1.9321828589408E+14
Altitude
18293821.036621
Surface area
1.9321828589408E+14
Volume
1.1108492733092E+21
Height
9957894.8856699