381645 is an odd 6-digits composite number following 381644
and preceding 381646 . In scientific notation, it is written as 3.81645 × 10^5.
The sum of its digits is 27. It has a total of 4 prime factors and 16 positive divisors.
There are 184320 positive integers (up to 381645) that are relatively prime to 381645.
381645 has 16 divisors, whose sum is 520128
The reverse of 381645 is 546183
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 27
Digital Root 9
Name
three hundred eighty-one thousand six hundred forty-five
Scientific notation
3.81645 × 10^5
Engineering notation
3.81645 × 10^3
Prime Factorization
27 × 5 × 11 × 257
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
381645
Product of the distinct prime numbers
The prime factorization of 381645 is 27 × 5 × 11 × 257.
Since it has a total of 4 prime factors.
7 , 4 , 15 , 32 , 303 , 766 , 3874 , 627 , 5010 , 85657 , 692968 , 349323 , 2976556 , 2111972 , 7365544 , 35771216 , 793617113 , 548720638 , 4062912226 , 7975520238
n×2
763290
n×3
1144935
n×4
1526580
n×5
1908225
n÷2
190822.5
n÷3
127215
n÷3
95411.25
n÷5
76329
n2
145652906025
n3
55587703319911125
n4
2.1214769033527E+22
n5
8.0965105278006E+27
2 √n
617.77423060532
3 √n
72.535931455948
4 √n
24.855064486042
5 √n
13.071695283581
1 , 5 , 11 , 27 , 55 , 135 , 257 , 297 , 1285 , 1485 , 2827 , 6939 , 14135 , 34695 , 76329 , 381645
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
-381644
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 381645 can be divided by 16 positive divisors.
The sum of these divisors (counting 381645) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1011101001011001101
3
Ternary
201101112000
4
Quaternary
1131023031
5
Quinary
44203040
6
Senary
12102513
8
Octal
1351315
10
Decimal
381645
12
Duodecimal
164a39
16
Hexadecimal
5d2cd
20
Vigesimal
27e25
36
Base36
86h9
md5
afa5633edbd4e13408939cd899b06eb4
sha1
b808be91730c5606d22bc3ca1f50c1ebd0e2d73c
sha256
069e798f1e306c66675c2cd8376f8419a1a0db9a16f6c8fa27d96697f344cd9b
sha512
81a6dfd73c924557bfb382dc27574c1dad463510ec3975f5861f18ac2dccc862ddcb3576dccbcad4c5902d1353d8ffe38517b0596ac344156c09959cf2370784
ripemd-160
098d15de4a8e81bd4cd77a00f3d959ca0627f75e
Diameter
763290
Circumference
2397946.2565586
Area
457582099542.14
Volume
2.3284522717302E+17
Surface area
1830328398168.6
Circumference
2397946.2565586
Perimeter
1526580
Area
145652906025
Diagonal
539727.53501188
Surface area
873917436150
Volume
55587703319911125
Space diagonal
661028.53045462
Perimeter
1144935
Area
63069558376.339
Altitude
330514.26522731
Surface area
63069558376.339
Volume
6.5510736613492E+15
Height
179909.17833729