256988 is an even 6-digits composite number following 256987
and preceding 256989 . In scientific notation, it is written as 2.56988 × 10^5.
The sum of its digits is 38. It has a total of 4 prime factors and 12 positive divisors.
There are 125280 positive integers (up to 256988) that are relatively prime to 256988.
256988 has 12 divisors, whose sum is 460992
The reverse of 256988 is 889652
Previous prime number is 41
Is Prime? no
Number parity even
Number length 6
Sum of Digits 38
Digital Root 2
Name
two hundred fifty-six thousand nine hundred eighty-eight
Scientific notation
2.56988 × 10^5
Engineering notation
2.56988 × 10^3
Prime Factorization
2 × 2 × 41 × 1567
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
128494
Product of the distinct prime numbers
The prime factorization of 256988 is 2 × 2 × 41 × 1567.
Since it has a total of 4 prime factors.
10 , 4 , 35 , 37 , 603 , 737 , 4036 , 9067 , 96901 , 83168 , 709298 , 740416 , 6558513 , 1275875 , 62522503 , 93339751 , 11671694 , 968254257 , 4581298969 , 8632761405
n×2
513976
n×3
770964
n×4
1027952
n×5
1284940
n÷2
128494
n÷3
85662.666666667
n÷3
64247
n÷5
51397.6
n2
66042832144
n3
16972215347022272
n4
4.3616556776006E+21
n5
1.1208931692752E+27
2 √n
506.93983863966
3 √n
63.577622231562
4 √n
22.515324528855
5 √n
12.077653585588
1 , 2 , 4 , 41 , 82 , 164 , 1567 , 3134 , 6268 , 64247 , 128494 , 256988
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-256987
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 256988 can be divided by 12 positive divisors.
The sum of these divisors (counting 256988) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
111110101111011100
3
Ternary
111001112002
4
Quaternary
332233130
5
Quinary
31210423
6
Senary
5301432
8
Octal
765734
10
Decimal
256988
12
Duodecimal
104878
16
Hexadecimal
3ebdc
20
Vigesimal
1c298
36
Base36
5iak
md5
6ba146ea9654c10e700f0b599f5947ec
sha1
ac6797e53493e936360ad139d5096e344afbe2e9
sha256
a9f3a2adbb7f868fa1d5284c84f6bed09138de9a6ffa3f1f42b51f781356399d
sha512
0362876fe96ae079e68c56f8afc2934319ba19a54cdc67f915fb3b219d3b4d506d5193980b2caca922762f8c26294d15f0074e4304f5b0b60ddf44849f4d8fa7
ripemd-160
a04cd3e637c37f2bc579c65186a5e006e0533923
Diameter
513976
Circumference
1614703.2257215
Area
207479676285.85
Volume
7.1093049399132E+16
Surface area
829918705143.42
Circumference
1614703.2257215
Perimeter
1027952
Area
66042832144
Diagonal
363435.91496714
Surface area
396256992864
Volume
16972215347022272
Space diagonal
445116.27293551
Perimeter
770964
Area
28597385187.288
Altitude
222558.13646776
Surface area
28597385187.288
Volume
2.0001947606063E+15
Height
121145.30498905