21804881 is an odd 8-digits composite number following 21804880
and preceding 21804882 . In scientific notation, it is written as 2.1804881 × 10^7.
The sum of its digits is 32. It has a total of 4 prime factors and 16 positive divisors.
There are 18144000 positive integers (up to 21804881) that are relatively prime to 21804881.
21804881 has 16 divisors, whose sum is 25659648
The reverse of 21804881 is 18840812
Previous prime number is 73
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
twenty-one million eight hundred four thousand eight hundred eighty-one
Scientific notation
2.1804881 × 10^7
Engineering notation
2.1804881 × 10^6
Prime Factorization
7 × 71 × 73 × 601
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
21804881
Product of the distinct prime numbers
The prime factorization of 21804881 is 7 × 71 × 73 × 601.
Since it has a total of 4 prime factors.
2 , 8 , 24 , 6 , 369 , 246 , 6915 , 4137 , 10262 , 16820 , 426314 , 87261 , 4412385 , 7334938 , 44339052 , 97943748 , 785315859 , 555129023 , 218832265 , 625944049
n×2
43609762
n×3
65414643
n×4
87219524
n×5
109024405
n÷2
10902440.5
n÷3
7268293.6666667
n÷3
5451220.25
n÷5
4360976.2
n2
475452835424161
n3
1.0367192497536E+22
n4
2.2605539871287E+29
n5
4.9291110683418E+36
2 √n
4669.5696803881
3 √n
279.37309147266
4 √n
68.334249687753
5 √n
29.356937225024
1 , 7 , 71 , 73 , 497 , 511 , 601 , 4207 , 5183 , 36281 , 42671 , 43873 , 298697 , 307111 , 3114983 , 21804881
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21804880
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21804881 can be divided by 16 positive divisors.
The sum of these divisors (counting 21804881) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1010011001011011101010001
3
Ternary
1112000210200012
4
Quaternary
1103023131101
5
Quinary
21040224011
6
Senary
2055204305
8
Octal
123133521
10
Decimal
21804881
12
Duodecimal
7376695
16
Hexadecimal
14cb751
20
Vigesimal
6g5c41
36
Base36
czcr5
md5
13bef84abf04188c1e24e1aff568e3fe
sha1
fab9f7161fc3b924e564a896bf2bb0038e40fc9b
sha256
7e4df1ea66976ce77a3243e16ea79c703537414cef18117a1479c8d8402faa39
sha512
005d06538739a6806c0cc7a6b02951c8dbc6096772876a550041b57d499aceb6557888d3cc47df31cf3f1180cd0a00cb1e89495a718336ab0466ec79084ae35b
ripemd-160
f9df6642d7f1bab34ab68943ba26af145d43d135
Diameter
43609762
Circumference
137004107.924
Area
1.493679134897E+15
Volume
4.3425994384815E+22
Surface area
5.9747165395879E+15
Circumference
137004107.924
Perimeter
87219524
Area
475452835424161
Diagonal
30836758.436131
Surface area
2852717012544966
Volume
1.0367192497536E+22
Space diagonal
37767161.744993
Perimeter
65414643
Area
2.0587711688933E+14
Altitude
18883580.872497
Surface area
2.0587711688933E+14
Volume
1.2217853528124E+21
Height
10278919.47871