381808 is an even 6-digits composite number following 381807
and preceding 381809 . In scientific notation, it is written as 3.81808 × 10^5.
The sum of its digits is 28. It has a total of 7 prime factors and 30 positive divisors.
There are 163296 positive integers (up to 381808) that are relatively prime to 381808.
381808 has 30 divisors, whose sum is 862296
The reverse of 381808 is 808183
Previous prime number is 7
Is Prime? no
Number parity even
Number length 6
Sum of Digits 28
Digital Root 1
Name
three hundred eighty-one thousand eight hundred eight
Scientific notation
3.81808 × 10^5
Engineering notation
3.81808 × 10^3
Prime Factorization
2 × 2 × 2 × 2 × 7 × 7 × 487
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
7
Total number of prime factors
rad
Radical
6818
Product of the distinct prime numbers
The prime factorization of 381808 is 2 × 2 × 2 × 2 × 7 × 7 × 487.
Since it has a total of 7 prime factors.
4 , 10 , 54 , 89 , 403 , 234 , 6993 , 8761 , 97456 , 48260 , 323207 , 799584 , 6270221 , 7675292 , 86797481 , 3289875 , 688581468 , 293351494 , 8811499881 , 8491031244
n×2
763616
n×3
1145424
n×4
1527232
n×5
1909040
n÷2
190904
n÷3
127269.33333333
n÷3
95452
n÷5
76361.6
n2
145777348864
n3
55658958015066112
n4
2.1251035441816E+22
n5
8.113815339969E+27
2 √n
617.90614173999
3 √n
72.546256648191
4 √n
24.857717951171
5 √n
13.072811673116
1 , 2 , 4 , 7 , 8 , 14 , 16 , 28 , 49 , 56 , 98 , 112 , 196 , 392 , 487 , 784 , 974 , 1948 , 3409 , 3896 , 6818 , 7792 , 13636 , 23863 , 27272 , 47726 , 54544 , 95452 , 190904 , 381808
30 divisors
τ
Total Divisors
30
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-381807
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.033333333333333
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
30
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 381808 can be divided by 30 positive divisors.
The sum of these divisors (counting 381808) is 1, the average is 0.033333333333333.
Base
System
Value
2
Binary
1011101001101110000
3
Ternary
201101202001
4
Quaternary
1131031300
5
Quinary
44204213
6
Senary
12103344
8
Octal
1351560
10
Decimal
381808
12
Duodecimal
164b54
16
Hexadecimal
5d370
20
Vigesimal
27ea8
36
Base36
86ls
md5
b019afcf9066b5287b696122f00c87ca
sha1
03047866aefc037284a518da66abb07cb408ceaf
sha256
7563f33d68ee341f06e1e2fde0e3fdc945c52031fbcf3c198ac6666760bb45eb
sha512
70bfa194ec0eb48fc161cd252da9b514364bd376cc34b32466fb702b2c9f5be52b1155942053d2c8fa5dcbeb5c9854c6ce1a3c6f269abb8aa29fec66459682e7
ripemd-160
bfc20393f3fecba72fbc9e2f556ed1313d5734c5
Diameter
763616
Circumference
2398970.4157636
Area
457973048250.94
Volume
2.3314369814213E+17
Surface area
1831892193003.8
Circumference
2398970.4157636
Perimeter
1527232
Area
145777348864
Diagonal
539958.05182255
Surface area
874664093184
Volume
55658958015066112
Space diagonal
661310.85473626
Perimeter
1145424
Area
63123443706.285
Altitude
330655.42736813
Surface area
63123443706.285
Volume
6.5594711077051E+15
Height
179986.01727418