1656 is an even 4-digits composite number following 1655
and preceding 1657 . In scientific notation, it is written as 1.656 × 10^3.
The sum of its digits is 18. It has a total of 5 prime factors and 16 positive divisors.
There are 528 positive integers (up to 1656) that are relatively prime to 1656.
1656 has 16 divisors, whose sum is 3600
The reverse of 1656 is 6561
Previous prime number is 9
Is Prime? no
Number parity even
Number length 4
Sum of Digits 18
Digital Root 9
Name
one thousand six hundred fifty-six
Scientific notation
1.656 × 10^3
Engineering notation
1.656 × 10^3
Prime Factorization
2 × 2 × 2 × 9 × 23
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
414
Product of the distinct prime numbers
The prime factorization of 1656 is 2 × 2 × 2 × 9 × 23.
Since it has a total of 5 prime factors.
8 , 2 , 19 , 28 , 684 , 570 , 9321 , 2310 , 33336 , 27580 , 573879 , 319479 , 4875619 , 1590259 , 87145871 , 66734744 , 677309252 , 207531876 , 5893335915 , 5837640177
n×2
3312
n×3
4968
n×4
6624
n×5
8280
n÷2
828
n÷3
552
n÷3
414
n÷5
331.2
n2
2742336
n3
4541308416
n4
7520406736896
n5
12453793556299776
2 √n
40.693979898752
3 √n
11.830963399401
4 √n
6.3791833253757
5 √n
4.4036426216595
1 , 2 , 4 , 8 , 9 , 18 , 23 , 36 , 46 , 72 , 92 , 184 , 207 , 414 , 828 , 1656
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
-1655
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 1656 can be divided by 16 positive divisors.
The sum of these divisors (counting 1656) is 1, the average is 0.0625.
Base
System
Value
2
Binary
11001111000
3
Ternary
2021100
4
Quaternary
121320
5
Quinary
23111
6
Senary
11400
8
Octal
3170
10
Decimal
1656
12
Duodecimal
b60
16
Hexadecimal
678
20
Vigesimal
42g
36
Base36
1a0
md5
712a3c9878efeae8ff06d57432016ceb
sha1
7fd0dc28db1b5252f0aca04247cf21853f772e70
sha256
681d12400213531e5fdef04c597ac192d359c2d0351df6f22f0240134d873350
sha512
ff2b49d3c31ae6428b7477bc6b59d786e0902aa4758ac5b3c9c86d96fcf564bd473bc5a8778cd6fab9c2387a487d93bc5afe8a246af0affb45ed7c5e3acda95b
ripemd-160
2b04bd7130532df5a1bde7f64d94718926ca4947
Diameter
3312
Circumference
10404.954868689
Area
8615302.6312748
Volume
19022588209.855
Surface area
34461210.525099
Circumference
10404.954868689
Perimeter
6624
Area
2742336
Diagonal
2341.9376592898
Surface area
16454016
Volume
4541308416
Space diagonal
2868.2761373341
Perimeter
4968
Area
1187466.3208563
Altitude
1434.138068667
Surface area
1187466.3208563
Volume
535198329.40219
Height
780.64588642995