16820905 is an odd 8-digits composite number following 16820904
and preceding 16820906 . In scientific notation, it is written as 1.6820905 × 10^7.
The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors.
There are 12665088 positive integers (up to 16820905) that are relatively prime to 16820905.
16820905 has 8 divisors, whose sum is 21372552
The reverse of 16820905 is 50902861
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
sixteen million eight hundred twenty thousand nine hundred five
Scientific notation
1.6820905 × 10^7
Engineering notation
1.6820905 × 10^6
Prime Factorization
5 × 17 × 197893
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
16820905
Product of the distinct prime numbers
The prime factorization of 16820905 is 5 × 17 × 197893.
Since it has a total of 3 prime factors.
8 , 6 , 78 , 46 , 144 , 856 , 1898 , 9402 , 7053 , 4634 , 565859 , 215670 , 2830575 , 9166967 , 29751499 , 27099940 , 530845859 , 266671449 , 1508263888 , 6783183590
n×2
33641810
n×3
50462715
n×4
67283620
n×5
84104525
n÷2
8410452.5
n÷3
5606968.3333333
n÷3
4205226.25
n÷5
3364181
n2
282942845019025
n3
4.7593547164947E+21
n4
8.005665354746E+28
n5
1.3466253639397E+36
2 √n
4101.3296624388
3 √n
256.22202113717
4 √n
64.041624451904
5 √n
27.872111559047
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
-16820904
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 16820905 can be divided by 8 positive divisors.
The sum of these divisors (counting 16820905) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000000001010101010101001
3
Ternary
1011122120221111
4
Quaternary
1000022222221
5
Quinary
13301232110
6
Senary
1400310321
8
Octal
100125251
10
Decimal
16820905
12
Duodecimal
57723a1
16
Hexadecimal
100aaa9
20
Vigesimal
552c55
36
Base36
a0j3d
md5
8dbe6ff007ff6bebf86d76c85990123f
sha1
63f928121e906a0505a4a17ab0c7d1aa5b54ee55
sha256
cd26dd5b03f92c1a784f147df97f4b7cf40de4ffa439731cba4da10a9df8ca14
sha512
45318986bb1bc83b11791ef7f10ce5a7c460fc67f56f9833f7f41db7f7ffa8d68f598de6ac9557c86ba5a90d0ac7ed725531a5f4e970d3871926a69e49226e09
ripemd-160
b560aec01c237b18f8a177638e0f65097f201e14
Diameter
33641810
Circumference
105688863.14946
Area
8.8889116329756E+14
Volume
1.9935938417557E+22
Surface area
3.5555646531903E+15
Circumference
105688863.14946
Perimeter
67283620
Area
282942845019025
Diagonal
23788351.982389
Surface area
1697657070114150
Volume
4.7593547164947E+21
Space diagonal
29134662.089289
Perimeter
50462715
Area
1.2251784580276E+14
Altitude
14567331.044645
Surface area
1.2251784580276E+14
Volume
5.6089533235094E+20
Height
7929450.6607965