638256985 is an odd 9-digits composite number following 638256984
and preceding 638256986 . In scientific notation, it is written as 6.38256985 × 10^8.
The sum of its digits is 52. It has a total of 4 prime factors and 16 positive divisors.
There are 478430400 positive integers (up to 638256985) that are relatively prime to 638256985.
638256985 has 16 divisors, whose sum is 777911040
The reverse of 638256985 is 589652836
Previous prime number is 71
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 52
Digital Root 7
Name
six hundred thirty-eight million two hundred fifty-six thousand nine hundred eighty-five
Scientific notation
6.38256985 × 10^8
Engineering notation
6.38256985 × 10^6
Prime Factorization
1829 × 5 × 71 × 983
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
638256985
Product of the distinct prime numbers
The prime factorization of 638256985 is 1829 × 5 × 71 × 983.
Since it has a total of 4 prime factors.
10 , 4 , 67 , 55 , 143 , 731 , 8660 , 2106 , 97121 , 20287 , 291595 , 898005 , 5403607 , 2789861 , 94698368 , 3893397 , 227486461 , 642142200 , 1093380718 , 7567604180
n×2
1276513970
n×3
1914770955
n×4
2553027940
n×5
3191284925
n÷2
319128492.5
n÷3
212752328.33333
n÷3
159564246.25
n÷5
127651397
n2
407371978901290225
n3
2.6000801102702E+26
n4
1.6595192919395E+35
n5
1.0591997798227E+44
2 √n
25263.748435258
3 √n
860.99082888643
4 √n
158.94574053827
5 √n
57.676528842798
1 , 5 , 71 , 355 , 983 , 1829 , 4915 , 9145 , 69793 , 129859 , 348965 , 649295 , 1797907 , 8989535 , 127651397 , 638256985
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
-638256984
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 638256985 can be divided by 16 positive divisors.
The sum of these divisors (counting 638256985) is 1, the average is 0.0625.
Base
System
Value
2
Binary
100110000010110000011101011001
3
Ternary
1122110222210222121
4
Quaternary
212002300131121
5
Quinary
2301343210420
6
Senary
143200021241
8
Octal
4602603531
10
Decimal
638256985
12
Duodecimal
159901821
16
Hexadecimal
260b0759
20
Vigesimal
9j92295
36
Base36
ak028p
md5
00bff99eb505662ae011d1c63a8b0401
sha1
32ec8399994218ded964b8b697f75bcdb4bf5d94
sha256
090525fac16c460dece8e0afda9dd88481da9b66878182264d93d07e4c22f579
sha512
f6fe83469b61a7cd4e44d515fe95d85f2d33ac37524df2e50bc51f4721b4a659b44d84f8ade84dfeb155d28e482f8cb26743f30005737a279d4d0790cc6f8808
ripemd-160
22d1df73998756b86d77ed623a1c5c38c2dd37bb
Diameter
1276513970
Circumference
4010286910.3567
Area
1.2797968161946E+18
Volume
1.089119009756E+27
Surface area
5.1191872647785E+18
Circumference
4010286910.3567
Perimeter
2553027940
Area
407371978901290225
Diagonal
902631684.46636
Surface area
2444231873407741350
Volume
2.6000801102702E+26
Space diagonal
1105493526.3057
Perimeter
1914770955
Area
1.7639724125923E+17
Altitude
552746763.15286
Surface area
1.7639724125923E+17
Volume
3.0642237960006E+25
Height
300877228.15545