638389946 is an even 9-digits composite number following 638389945
and preceding 638389947 . In scientific notation, it is written as 6.38389946 × 10^8.
The sum of its digits is 56. It has a total of 3 prime factors and 8 positive divisors.
There are 317161728 positive integers (up to 638389946) that are relatively prime to 638389946.
638389946 has 8 divisors, whose sum is 963684660
The reverse of 638389946 is 649983836
Previous prime number is 157
Is Prime? no
Number parity even
Number length 9
Sum of Digits 56
Digital Root 2
Name
six hundred thirty-eight million three hundred eighty-nine thousand nine hundred forty-six
Scientific notation
6.38389946 × 10^8
Engineering notation
6.38389946 × 10^6
Prime Factorization
2 × 157 × 2033089
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
638389946
Product of the distinct prime numbers
The prime factorization of 638389946 is 2 × 157 × 2033089.
Since it has a total of 3 prime factors.
2 , 9 , 82 , 70 , 840 , 121 , 8339 , 7097 , 3146 , 38849 , 539945 , 810569 , 271425 , 4961270 , 67215052 , 36854463 , 306319498 , 362979037 , 9763803559 , 1446082387
n×2
1276779892
n×3
1915169838
n×4
2553559784
n×5
3191949730
n÷2
319194973
n÷3
212796648.66667
n÷3
159597486.5
n÷5
127677989.2
n2
407541723153882916
n3
2.6017053863695E+26
n4
1.6609025611124E+35
n5
1.0603034962998E+44
2 √n
25266.379756506
3 √n
861.05061162592
4 √n
158.95401774257
5 √n
57.67893166492
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
-638389945
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 638389946 can be divided by 8 positive divisors.
The sum of these divisors (counting 638389946) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110000011010000111010111010
3
Ternary
1122111020120101002
4
Quaternary
212003100322322
5
Quinary
2301411434241
6
Senary
143202525002
8
Octal
4603207272
10
Decimal
638389946
12
Duodecimal
159966762
16
Hexadecimal
260d0eba
20
Vigesimal
9j9ieh6
36
Base36
ak2wu2
md5
9dcfa857c8d9041f416a1a3667e085c3
sha1
b10b3a481dde48fbf88c986d498e7f78d7ec5c92
sha256
7b6fce3f8b22137cb065a2e8a8e5db12660df41eff85a33df3172cd6b19318c4
sha512
ecaf1df26cad0d52dee5208cd5e95d9642c959e66052d44764df2790de758cc69de5b7b1a65610bba5879b508c5f9329869a340fe52db86bf3ad0be845182d1f
ripemd-160
8a4628545b9d9bdbd408ae0042788bae82bffaaa
Diameter
1276779892
Circumference
4011122328.9584
Area
1.2803300834916E+18
Volume
1.0897998038165E+27
Surface area
5.1213203339663E+18
Circumference
4011122328.9584
Perimeter
2553559784
Area
407541723153882916
Diagonal
902819719.71583
Surface area
2445250338923297496
Volume
2.6017053863695E+26
Space diagonal
1105723821.5132
Perimeter
1915169838
Area
1.7647074267667E+17
Altitude
552861910.75658
Surface area
1.7647074267667E+17
Volume
3.0661392022525E+25
Height
300939906.57194