638861997 is an odd 9-digits composite number following 638861996
and preceding 638861998 . In scientific notation, it is written as 6.38861997 × 10^8.
The sum of its digits is 57. It has a total of 3 prime factors and 8 positive divisors.
There are 424369872 positive integers (up to 638861997) that are relatively prime to 638861997.
638861997 has 8 divisors, whose sum is 854892256
The reverse of 638861997 is 799168836
Previous prime number is 277
Is Prime? no Number parity odd Number length 9 Sum of Digits 57 Digital Root 3
Name
six hundred thirty-eight million eight hundred sixty-one thousand nine hundred ninety-seven
Scientific notation
6.38861997 × 10^8
Engineering notation
6.38861997 × 10^6
Prime Factorization
3 × 277 × 768787
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
638861997 Product of the distinct prime numbers
The prime factorization of 638861997 is 3 × 277 × 768787.
Since it has a total of 3 prime factors.
8 , 10 , 11 , 45 , 377 , 105 , 8745 , 48 , 58513 , 47488 , 780999 , 783867 , 3616068 , 2872203 , 64928614 , 42304478 , 158604592 , 42651486 , 2374289165 , 5798322769
n×2
1277723994
n×3
1916585991
n×4
2555447988
n×5
3194309985
n÷2
319430998.5
n÷3
212953999
n÷3
159715499.25
n÷5
127772399.4
n2
408144651210828009
n3
2.6074810693742E+26
n4
1.6658205631201E+35
n5
1.0642294515986E+44
2 √n25275.719514981
3 √n861.26279106356
4 √n158.98339383401
5 √n57.687459163795
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
-638861996 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 638861997 can be divided by 8 positive divisors.
The sum of these divisors (counting 638861997) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110000101000100001010101101
3
Ternary
1122112010112220110
4
Quaternary
212011010022231
5
Quinary
2302022040442
6
Senary
143221010233
8
Octal
4605041255
10
Decimal
638861997
12
Duodecimal
159b53979
16
Hexadecimal
261442ad
20
Vigesimal
9jchejh
36
Base36
akd12l
md5
17aae1bd6f99111995ba386d537d936e
sha1
ed610b4c22200c4467320c9bde78026007a483d3
sha256
1fd9e124ad8ee8bd2a007f894274984d7294484253a7537a12598e40fcbe91d3
sha512
a2050d90b8b818e0084c76cdd496bf9a283e4b0ae0ba5c066dbb990b4d64a886ad30f0a96f0e7ad76ebb7f6dc07301763ca764359448f6ba3d9667dae1576ba8
ripemd-160
50b088525427535b8cb3a7cb6b4d3a3224543a9f
Diameter
1277723994
Circumference
4014088312.8658
Area
1.2822242378459E+18
Volume
1.0922191162561E+27
Surface area
5.1288969513836E+18
Circumference
4014088312.8658
Perimeter
2555447988
Area
408144651210828009
Diagonal
903487300.64216
Surface area
2448867907264968054
Volume
2.6074810693742E+26
Space diagonal
1106541437.8289
Perimeter
1916585991
Area
1.7673181818366E+17
Altitude
553270718.91446
Surface area
1.7673181818366E+17
Volume
3.0729459099501E+25
Height
301162433.54739