21803921 is an odd 8-digits composite number following 21803920
and preceding 21803922 . In scientific notation, it is written as 2.1803921 × 10^7.
The sum of its digits is 26. It has a total of 2 prime factors and 4 positive divisors.
There are 21527844 positive integers (up to 21803921) that are relatively prime to 21803921.
21803921 has 4 divisors, whose sum is 22080000
The reverse of 21803921 is 12930812
Previous prime number is 79
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8
Name
twenty-one million eight hundred three thousand nine hundred twenty-one
Scientific notation
2.1803921 × 10^7
Engineering notation
2.1803921 × 10^6
Prime Factorization
79 × 275999
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
21803921
Product of the distinct prime numbers
The prime factorization of 21803921 is 79 × 275999.
Since it has a total of 2 prime factors.
4 , 2 , 43 , 18 , 301 , 962 , 2855 , 3268 , 35765 , 18302 , 645986 , 681499 , 681226 , 3996374 , 16650717 , 10352525 , 552401874 , 938485696 , 6746995916 , 6069645787
n×2
43607842
n×3
65411763
n×4
87215684
n×5
109019605
n÷2
10901960.5
n÷3
7267973.6666667
n÷3
5450980.25
n÷5
4360784.2
n2
475410970974241
n3
1.0365823253656E+22
n4
2.2601559132267E+29
n5
4.9280260979678E+36
2 √n
4669.4668860588
3 √n
279.36899144106
4 √n
68.333497540071
5 √n
29.356678721838
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21803920
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21803921 can be divided by 4 positive divisors.
The sum of these divisors (counting 21803921) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010011001011001110010001
3
Ternary
1112000202100122
4
Quaternary
1103023032101
5
Quinary
21040211141
6
Senary
2055200025
8
Octal
123131621
10
Decimal
21803921
12
Duodecimal
7376015
16
Hexadecimal
14cb391
20
Vigesimal
6g59g1
36
Base36
czc0h
md5
67421f1ebb050b04339fe192cadc7f28
sha1
5815614b5641a7ef5a847a75a8385f5e93fea12d
sha256
70124a68924e50ba3f53cf3e148eca308477d20fb16c0eaf64197c88c336d986
sha512
c2214a60c52a8fb75ac9e4fcf698d8c9e2542803e43e76847e597ddd47d2253024fe496e507977d33e84f4764e2d8367ac94e20cab090db2f47d6d9b3db754f7
ripemd-160
16914144557a8f8e09bdc49a999e7111ae267313
Diameter
43607842
Circumference
136998076.0661
Area
1.4935476138487E+15
Volume
4.342025890946E+22
Surface area
5.9741904553947E+15
Circumference
136998076.0661
Perimeter
87215684
Area
475410970974241
Diagonal
30835400.791112
Surface area
2852465825845446
Volume
1.0365823253656E+22
Space diagonal
37765498.976218
Perimeter
65411763
Area
2.0585898905076E+14
Altitude
18882749.488109
Surface area
2.0585898905076E+14
Volume
1.2216239858735E+21
Height
10278466.930371