638856989 is an odd 9-digits composite number following 638856988
and preceding 638856990 . In scientific notation, it is written as 6.38856989 × 10^8.
The sum of its digits is 62. It has a total of 2 prime factors and 4 positive divisors.
There are 638766720 positive integers (up to 638856989) that are relatively prime to 638856989.
638856989 has 4 divisors, whose sum is 638947260
The reverse of 638856989 is 989658836
Previous prime number is 7741
Is Prime? no Number parity odd Number length 9 Sum of Digits 62 Digital Root 8
Name
six hundred thirty-eight million eight hundred fifty-six thousand nine hundred eighty-nine
Scientific notation
6.38856989 × 10^8
Engineering notation
6.38856989 × 10^6
Prime Factorization
7741 × 82529
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
638856989 Product of the distinct prime numbers
The prime factorization of 638856989 is 7741 × 82529.
Since it has a total of 2 prime factors.
8 , 4 , 11 , 64 , 160 , 505 , 2823 , 4848 , 25378 , 55150 , 327786 , 881175 , 3810963 , 7744457 , 95115942 , 70079881 , 687552064 , 737438387 , 8192182216 , 3349204873
n×2
1277713978
n×3
1916570967
n×4
2555427956
n×5
3194284945
n÷2
319428494.5
n÷3
212952329.66667
n÷3
159714247.25
n÷5
127771397.8
n2
408138252394146121
n3
2.6074197502025E+26
n4
1.6657683306735E+35
n5
1.0641877401056E+44
2 √n25275.62044738
3 √n861.26054059562
4 √n158.98308226783
5 √n57.687368721821
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
-638856988 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 638856989 can be divided by 4 positive divisors.
The sum of these divisors (counting 638856989) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110000101000010111100011101
3
Ternary
1122112010022000222
4
Quaternary
212011002330131
5
Quinary
2302021410424
6
Senary
143220531125
8
Octal
4605027435
10
Decimal
638856989
12
Duodecimal
159b50aa5
16
Hexadecimal
26142f1d
20
Vigesimal
9jch299
36
Base36
akcx7h
md5
aeafe800ebe550543246461fd9b511c0
sha1
cf14f1278761c160e6bfd90e608be2122b2a5200
sha256
a311da202d5c5ff837b7b629477b32c81cf372e471f610f8100ec20c3fca58a2
sha512
a0dec1202a32ac4d298f66ebf7a44762beb7df679f422c2f29fc9f0a7c5560c7cfe1e514da91bfe12c816280b2bd4e36e3998b62bb730e28fbc6ff36a29c7033
ripemd-160
3e99ad1e918b3668f8eefd1244d34b4a940bef51
Diameter
1277713978
Circumference
4014056846.6738
Area
1.2822041353704E+18
Volume
1.0921934309415E+27
Surface area
5.1288165414817E+18
Circumference
4014056846.6738
Perimeter
2555427956
Area
408138252394146121
Diagonal
903480218.26064
Surface area
2448829514364876726
Volume
2.6074197502025E+26
Space diagonal
1106532763.7185
Perimeter
1916570967
Area
1.7672904741476E+17
Altitude
553266381.85924
Surface area
1.7672904741476E+17
Volume
3.0728736446132E+25
Height
301160072.75355