257421 is an odd 6-digits composite number following 257420
and preceding 257422 . In scientific notation, it is written as 2.57421 × 10^5.
The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors.
There are 168272 positive integers (up to 257421) that are relatively prime to 257421.
257421 has 8 divisors, whose sum is 349920
The reverse of 257421 is 124752
Previous prime number is 1619
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 21
Digital Root 3
Name
two hundred fifty-seven thousand four hundred twenty-one
Scientific notation
2.57421 × 10^5
Engineering notation
2.57421 × 10^3
Prime Factorization
3 × 1619 × 53
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
257421
Product of the distinct prime numbers
The prime factorization of 257421 is 3 × 1619 × 53.
Since it has a total of 3 prime factors.
6 , 9 , 57 , 78 , 563 , 62 , 2533 , 5861 , 57197 , 82638 , 319858 , 842362 , 1830022 , 1521649 , 30338872 , 31104077 , 927936842 , 860402340 , 3747619799 , 3402449415
n×2
514842
n×3
772263
n×4
1029684
n×5
1287105
n÷2
128710.5
n÷3
85807
n÷3
64355.25
n÷5
51484.2
n2
66265571241
n3
17058149614429461
n4
4.391125931896E+21
n5
1.1303680285146E+27
2 √n
507.36673127039
3 √n
63.613309583479
4 √n
22.524802580054
5 √n
12.081720781719
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-257420
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 257421 can be divided by 8 positive divisors.
The sum of these divisors (counting 257421) is 1, the average is 0.125.
Base
System
Value
2
Binary
111110110110001101
3
Ternary
111002010010
4
Quaternary
332312031
5
Quinary
31214141
6
Senary
5303433
8
Octal
766615
10
Decimal
257421
12
Duodecimal
104b79
16
Hexadecimal
3ed8d
20
Vigesimal
1c3b1
36
Base36
5iml
md5
e0eec4afa8ab3236c032068920f81d60
sha1
fc33278c4954fc3bb22e5d915435ece5738487b8
sha256
5175d0f7d9a56a4062dd86b5ef5dcb091470cda5ddccd6b709bf9df1eaafe1f5
sha512
dad8082ec9dfd3624795a3e279065536520ae032de5e0204312856b40da87bb9ea28135ee9ed6f369b732319b391b89248c02903f8fc5a3102b59cb3ba6aa0c2
ripemd-160
bcd2dd3eea1962e93797860035d29537f49a6147
Diameter
514842
Circumference
1617423.8449595
Area
208179431796.66
Volume
7.1453010016703E+16
Surface area
832717727186.63
Circumference
1617423.8449595
Perimeter
1029684
Area
66265571241
Diagonal
364048.26943964
Surface area
397593427446
Volume
17058149614429461
Space diagonal
445866.25093519
Perimeter
772263
Area
28693834045.497
Altitude
222933.12546759
Surface area
28693834045.497
Volume
2.010322211143E+15
Height
121349.42314655