638642893 is an odd 9-digits composite number following 638642892
and preceding 638642894 . In scientific notation, it is written as 6.38642893 × 10^8.
The sum of its digits is 49. It has a total of 4 prime factors and 12 positive divisors.
There are 515206080 positive integers (up to 638642893) that are relatively prime to 638642893.
638642893 has 12 divisors, whose sum is 775339552
The reverse of 638642893 is 398246836
Previous prime number is 17
Is Prime? no Number parity odd Number length 9 Sum of Digits 49 Digital Root 4
Name
six hundred thirty-eight million six hundred forty-two thousand eight hundred ninety-three
Scientific notation
6.38642893 × 10^8
Engineering notation
6.38642893 × 10^6
Prime Factorization
7 × 17 × 17 × 315691
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
37567229 Product of the distinct prime numbers
The prime factorization of 638642893 is 7 × 17 × 17 × 315691.
Since it has a total of 4 prime factors.
10 , 3 , 4 , 35 , 944 , 408 , 3937 , 9319 , 68214 , 37086 , 537656 , 335575 , 3035327 , 3956783 , 46818802 , 86567583 , 242801818 , 576294171 , 1503837268 , 945892481
n×2
1277285786
n×3
1915928679
n×4
2554571572
n×5
3193214465
n÷2
319321446.5
n÷3
212880964.33333
n÷3
159660723.25
n÷5
127728578.6
n2
407864744779409449
n3
2.6047992055863E+26
n4
1.6635365003397E+35
n5
1.0624057631881E+44
2 √n25271.3848651
3 √n861.1643202929
4 √n158.96976085124
5 √n57.683501724657
1 , 7 , 17 , 119 , 289 , 2023 , 315691 , 2209837 , 5366747 , 37567229 , 91234699 , 638642893
12 divisors
τ Total Divisors
12 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-638642892 Sum of the proper positive divisors of n
A Arithmetic Mean
0.083333333333333 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
12 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 638642893 can be divided by 12 positive divisors.
The sum of these divisors (counting 638642893) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
100110000100001110101011001101
3
Ternary
1122111201102100111
4
Quaternary
212010032223031
5
Quinary
2301443033033
6
Senary
143212200021
8
Octal
4604165315
10
Decimal
638642893
12
Duodecimal
159a69011
16
Hexadecimal
2610eacd
20
Vigesimal
9jba74d
36
Base36
ak8c0d
md5
656026cb910215efc6d2387e1f517284
sha1
819723a96ee99a6dca79c082cd3d91f1cb30ae38
sha256
6272ef50a08294a6f77033a14515398f905654fbcf0e3ae099d96f2dba0d9e95
sha512
facec13bc6f75a81e9942aa714c3c67f06a229c3976952ddb962413d1dfe623104377cba5e5cda10e35892601c325d4eb681606b7e1a86a6f8be08fd710e97ae
ripemd-160
b0a5601a4db7beda738cda2075e742aeb977218e
Diameter
1277285786
Circumference
4012711641.8323
Area
1.2813448858573E+18
Volume
1.0910957397795E+27
Surface area
5.1253795434291E+18
Circumference
4012711641.8323
Perimeter
2554571572
Area
407864744779409449
Diagonal
903177440.79379
Surface area
2447188468676456694
Volume
2.6047992055863E+26
Space diagonal
1106161938.5688
Perimeter
1915928679
Area
1.7661061514351E+17
Altitude
553080969.28439
Surface area
1.7661061514351E+17
Volume
3.0697853031657E+25
Height
301059146.93126