21231621 is an odd 8-digits composite number following 21231620
and preceding 21231622 . In scientific notation, it is written as 2.1231621 × 10^7.
The sum of its digits is 18. It has a total of 3 prime factors and 8 positive divisors.
There are 13697640 positive integers (up to 21231621) that are relatively prime to 21231621.
21231621 has 8 divisors, whose sum is 24352000
The reverse of 21231621 is 12613212
Previous prime number is 31
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9
Name
twenty-one million two hundred thirty-one thousand six hundred twenty-one
Scientific notation
2.1231621 × 10^7
Engineering notation
2.1231621 × 10^6
Prime Factorization
9 × 31 × 76099
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
21231621
Product of the distinct prime numbers
The prime factorization of 21231621 is 9 × 31 × 76099.
Since it has a total of 3 prime factors.
8 , 6 , 90 , 78 , 68 , 232 , 3907 , 1082 , 1092 , 65247 , 707204 , 463384 , 7344001 , 7776827 , 39600048 , 66438168 , 756798164 , 785456 , 7430964543 , 7345186768
n×2
42463242
n×3
63694863
n×4
84926484
n×5
106158105
n÷2
10615810.5
n÷3
7077207
n÷3
5307905.25
n÷5
4246324.2
n2
450781730287641
n3
9.5708268511914E+21
n4
2.0320416836112E+29
n5
4.3143538882635E+36
2 √n
4607.77831498
3 √n
276.90303617434
4 √n
67.880618109885
5 √n
29.200926464175
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
-21231620
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 21231621 can be divided by 8 positive divisors.
The sum of these divisors (counting 21231621) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000111111100000000101
3
Ternary
1110221200022100
4
Quaternary
1100333200011
5
Quinary
20413402441
6
Senary
2035022313
8
Octal
120774005
10
Decimal
21231621
12
Duodecimal
713a999
16
Hexadecimal
143f805
20
Vigesimal
6cdj11
36
Base36
cn2f9
md5
2f85bc30a5f424c8d05d2d351412b229
sha1
b85922acc215c0c4007dcabdb8c270d205164632
sha256
ea8cc75248d355aaa4c19cc83e083f89fc300b1b3ae6493df796d782f0fb7412
sha512
96b7f4e1e444650e878128d16d80f524f3d72a5be5efc9fb1f455c1d74336ca2f4948f415c3de87566f6f02865d8979bbb5a1307055b2ba3e586d9adfe84ca29
ripemd-160
c0b984e8791d757ab1630bda46fe3d8ffb24fe14
Diameter
42463242
Circumference
133402209.11481
Area
1.4161725722441E+15
Volume
4.0090185765977E+22
Surface area
5.6646902889766E+15
Circumference
133402209.11481
Perimeter
84926484
Area
450781730287641
Diagonal
30026046.369365
Surface area
2704690381725846
Volume
9.5708268511914E+21
Space diagonal
36774246.299046
Perimeter
63694863
Area
1.951942149955E+14
Altitude
18387123.149523
Surface area
1.951942149955E+14
Volume
1.12793276134E+21
Height
10008682.123122