78891 is an odd 5-digits composite number following 78890
and preceding 78892 . In scientific notation, it is written as 7.8891 × 10^4.
The sum of its digits is 33. It has a total of 2 prime factors and 4 positive divisors.
There are 52592 positive integers (up to 78891) that are relatively prime to 78891.
78891 has 4 divisors, whose sum is 105192
The reverse of 78891 is 19887
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 5
Sum of Digits 33
Digital Root 6
Name
seventy-eight thousand eight hundred ninety-one
Scientific notation
7.8891 × 10^4
Engineering notation
7.8891 × 10^3
Prime Factorization
3 × 26297
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
78891
Product of the distinct prime numbers
The prime factorization of 78891 is 3 × 26297.
Since it has a total of 2 prime factors.
1 , 7 , 45 , 90 , 933 , 420 , 2395 , 6370 , 87071 , 49970 , 81519 , 546771 , 7992972 , 7604059 , 52472813 , 19755090 , 574200490 , 660170650 , 1224381341 , 8404111772
n×2
157782
n×3
236673
n×4
315564
n×5
394455
n÷2
39445.5
n÷3
26297
n÷3
19722.75
n÷5
15778.2
n2
6223789881
n3
491001007501971
n4
3.8735560482838E+19
n5
3.0558871020516E+24
2 √n
280.87541722265
3 √n
42.888660942209
4 √n
16.759338209567
5 √n
9.5368618649994
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-78890
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 78891 can be divided by 4 positive divisors.
The sum of these divisors (counting 78891) is 1, the average is 0.25.
Base
System
Value
2
Binary
10011010000101011
3
Ternary
11000012220
4
Quaternary
103100223
5
Quinary
10011031
6
Senary
1405123
8
Octal
232053
10
Decimal
78891
12
Duodecimal
397a3
16
Hexadecimal
1342b
20
Vigesimal
9h4b
36
Base36
1ovf
md5
67200d39b342efca5ee43ba35fea7b68
sha1
720980a019328e0f7f7c8b9f01e4011f5d3e66b4
sha256
c18e5090f04db88bc70dde86a66bed2fc6a1a897e02cd8b7f0498dfd6d3fb2ca
sha512
4204261734ca7ead4dfe09b44bdd0eba7899cddb78bda16f72fddf79a3a507afc5d6ec61486fca100055f44d066c32a0dd69689ab45981802d0ea698987713a0
ripemd-160
9e7d3603dcfa2fb3368ec39dac9873bb0e122603
Diameter
157782
Circumference
495686.7720687
Area
19552612567.636
Volume
2.0567002107645E+15
Surface area
78210450270.544
Circumference
495686.7720687
Perimeter
315564
Area
6223789881
Diagonal
111568.72214918
Surface area
37342739286
Volume
491001007501971
Space diagonal
136643.22025992
Perimeter
236673
Area
2694980072.3813
Altitude
68321.610129958
Surface area
2694980072.3813
Volume
57865023662345
Height
37189.574049725