816 is an even 3-digits composite number following 815
and preceding 817 . In scientific notation, it is written as 8.16 × 10^2.
The sum of its digits is 15. It has a total of 6 prime factors and 20 positive divisors.
There are 256 positive integers (up to 816) that are relatively prime to 816.
816 has 20 divisors, whose sum is 2232
The reverse of 816 is 618
Previous prime number is 17
Is Prime? no
Number parity even
Number length 3
Sum of Digits 15
Digital Root 6
Name
eight hundred sixteen
Scientific notation
8.16 × 10^2
Engineering notation
8.16 × 10^0
Prime Factorization
2 × 2 × 2 × 2 × 17 × 3
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
6
Total number of prime factors
rad
Radical
102
Product of the distinct prime numbers
The prime factorization of 816 is 2 × 2 × 2 × 2 × 17 × 3.
Since it has a total of 6 prime factors.
6 , 9 , 15 , 46 , 868 , 403 , 99 , 4477 , 28660 , 20381 , 459405 , 669701 , 2817524 , 5581804 , 91488465 , 40775101 , 58296384 , 292201879 , 2291696799 , 8028598476
n×2
1632
n×3
2448
n×4
3264
n×5
4080
n÷2
408
n÷3
272
n÷3
204
n÷5
163.2
n2
665856
n3
543338496
n4
443364212736
n5
361785197592576
2 √n
28.565713714171
3 √n
9.3446574567105
4 √n
5.3446902355676
5 √n
3.8224167169338
1 , 2 , 3 , 4 , 6 , 8 , 12 , 16 , 17 , 24 , 34 , 48 , 51 , 68 , 102 , 136 , 204 , 272 , 408 , 816
20 divisors
τ
Total Divisors
20
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-815
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.05
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
20
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 816 can be divided by 20 positive divisors.
The sum of these divisors (counting 816) is 1, the average is 0.05.
Base
System
Value
2
Binary
1100110000
3
Ternary
1010020
4
Quaternary
30300
5
Quinary
11231
6
Senary
3440
8
Octal
1460
10
Decimal
816
12
Duodecimal
580
16
Hexadecimal
330
20
Vigesimal
20g
36
Base36
mo
md5
43fa7f58b7eac7ac872209342e62e8f1
sha1
f022da4e40566305c0c8f39fd8f4b83dd5368834
sha256
96bb293aaa330ef307ee004448b92b75ffdc25ade2831ed23fc60ffa97fffb7f
sha512
64b5514668bdbe6abe7f86abd790005f46d593d8e3efb785c87dd8ba9035b8bc5fc72001da81883391b690a5191057062ee711401c3e95c1935a3d3ffed138fe
ripemd-160
13fd189585695d7805cff6213316c3dd29b3e960
Diameter
1632
Circumference
5127.0792106585
Area
2091848.3179487
Volume
2275930969.9282
Surface area
8367393.2717947
Circumference
5127.0792106585
Perimeter
3264
Area
665856
Diagonal
1153.9982668964
Surface area
3995136
Volume
543338496
Space diagonal
1413.3534589762
Perimeter
2448
Area
288324.10563115
Altitude
706.6767294881
Surface area
288324.10563115
Volume
64033055.83355
Height
384.66608896548