87381 is an odd 5-digits composite number following 87380
and preceding 87382 . In scientific notation, it is written as 8.7381 × 10^4.
The sum of its digits is 27. It has a total of 4 prime factors and 16 positive divisors.
There are 46656 positive integers (up to 87381) that are relatively prime to 87381.
87381 has 16 divisors, whose sum is 118400
The reverse of 87381 is 18378
Previous prime number is 73
Is Prime? no
Number parity odd
Number length 5
Sum of Digits 27
Digital Root 9
Name
eighty-seven thousand three hundred eighty-one
Scientific notation
8.7381 × 10^4
Engineering notation
8.7381 × 10^3
Prime Factorization
9 × 7 × 73 × 19
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
87381
Product of the distinct prime numbers
The prime factorization of 87381 is 9 × 7 × 73 × 19.
Since it has a total of 4 prime factors.
1 , 4 , 1 , 77 , 542 , 540 , 5229 , 1809 , 21269 , 72493 , 904483 , 795268 , 5798740 , 8552105 , 60101392 , 28810876 , 191492724 , 577578410 , 5053814366 , 1912729079
n×2
174762
n×3
262143
n×4
349524
n×5
436905
n÷2
43690.5
n÷3
29127
n÷3
21845.25
n÷5
17476.2
n2
7635439161
n3
667192309327341
n4
5.8299931181332E+19
n5
5.094306286556E+24
2 √n
295.60277400593
3 √n
44.375065132484
4 √n
17.193102512517
5 √n
9.7338220439574
1 , 7 , 9 , 19 , 63 , 73 , 133 , 171 , 511 , 657 , 1197 , 1387 , 4599 , 9709 , 12483 , 87381
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
-87380
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 87381 can be divided by 16 positive divisors.
The sum of these divisors (counting 87381) is 1, the average is 0.0625.
Base
System
Value
2
Binary
10101010101010101
3
Ternary
11102212100
4
Quaternary
111111111
5
Quinary
10244011
6
Senary
1512313
8
Octal
252525
10
Decimal
87381
12
Duodecimal
42699
16
Hexadecimal
15555
20
Vigesimal
ai91
36
Base36
1vf9
md5
274418add9b6d8663419e406bb41d7fd
sha1
c4fc6d3388982a3c3627cb392faaa42f83e4d95b
sha256
ee2fcd19425380f46ce616bd5966ea97d97e317694c42e334999c00143f4da93
sha512
0ced5822d6933fc94a56306b6666076d3e5a3ab287b5c70d728a902672e4e5c2d88a72998cf8c1acef87fba62fd1c95ecfa2a0b6f20f2f834ef398977f73d74a
ripemd-160
74313d63bdedc015103cc5dee7eca60b96b88728
Diameter
174762
Circumference
549031.01532666
Area
23987439575.129
Volume
2.7947286100192E+15
Surface area
95949758300.518
Circumference
549031.01532666
Perimeter
349524
Area
7635439161
Diagonal
123575.39529372
Surface area
45812634966
Volume
667192309327341
Space diagonal
151348.33161618
Perimeter
262143
Area
3306242141.2383
Altitude
75674.165808088
Surface area
3306242141.2383
Volume
78629367713479
Height
41191.798431241