638691389 is an odd 9-digits composite number following 638691388
and preceding 638691390 . In scientific notation, it is written as 6.38691389 × 10^8.
The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors.
There are 528572016 positive integers (up to 638691389) that are relatively prime to 638691389.
638691389 has 8 divisors, whose sum is 755103360
The reverse of 638691389 is 983196836
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 53
Digital Root 8
Name
six hundred thirty-eight million six hundred ninety-one thousand three hundred eighty-nine
Scientific notation
6.38691389 × 10^8
Engineering notation
6.38691389 × 10^6
Prime Factorization
7 × 29 × 3146263
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
638691389
Product of the distinct prime numbers
The prime factorization of 638691389 is 7 × 29 × 3146263.
Since it has a total of 3 prime factors.
8 , 6 , 30 , 99 , 747 , 242 , 8937 , 8652 , 92278 , 81515 , 91515 , 300084 , 4952035 , 5158827 , 68325728 , 59203441 , 911217513 , 526915071 , 2369774590 , 8714142851
n×2
1277382778
n×3
1916074167
n×4
2554765556
n×5
3193456945
n÷2
319345694.5
n÷3
212897129.66667
n÷3
159672847.25
n÷5
127738277.8
n2
407926690382749321
n3
2.6053926449073E+26
n4
1.6640418472662E+35
n5
1.0628091987846E+44
2 √n
25272.344351089
3 √n
861.18611753843
4 √n
158.97277864807
5 √n
57.684377749166
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
-638691388
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 638691389 can be divided by 8 positive divisors.
The sum of these divisors (counting 638691389) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110000100011010100000111101
3
Ternary
1122111210212212122
4
Quaternary
212010122200331
5
Quinary
2302001111024
6
Senary
143213212325
8
Octal
4604324075
10
Decimal
638691389
12
Duodecimal
159a910a5
16
Hexadecimal
2611a83d
20
Vigesimal
9jbg899
36
Base36
ak9dfh
md5
71dcba5acf880ab612df67b914464025
sha1
ece9e9efe5242ece41e6319bd8b49e0bb92793a9
sha256
070ab9d772c522bcb8667d0f7efda07e526c96dd13531bdf18174527044e0a68
sha512
72d46b3885b98aa6930295dedc886090cb5f2d42c789e52c118f1018b49a7a68cde1d51ec5d62715e68445be86b15e206fac28343e474ec0ed6c4beff1f3f926
ripemd-160
87bfdf6f56dbc9c9efde5489c6c77b44a74fc6a6
Diameter
1277382778
Circumference
4013016351.1869
Area
1.2815394937096E+18
Volume
1.091344319061E+27
Surface area
5.1261579748386E+18
Circumference
4013016351.1869
Perimeter
2554765556
Area
407926690382749321
Diagonal
903246024.49471
Surface area
2447560142296495926
Volume
2.6053926449073E+26
Space diagonal
1106245936.1047
Perimeter
1916074167
Area
1.7663743837659E+17
Altitude
553122968.05237
Surface area
1.7663743837659E+17
Volume
3.0704846781125E+25
Height
301082008.1649