638443385 is an odd 9-digits composite number following 638443384
and preceding 638443386 . In scientific notation, it is written as 6.38443385 × 10^8.
The sum of its digits is 44. It has a total of 3 prime factors and 8 positive divisors.
There are 502381440 positive integers (up to 638443385) that are relatively prime to 638443385.
638443385 has 8 divisors, whose sum is 778691976
The reverse of 638443385 is 583344836
Previous prime number is 61
Is Prime? no Number parity odd Number length 9 Sum of Digits 44 Digital Root 8
Name
six hundred thirty-eight million four hundred forty-three thousand three hundred eighty-five
Scientific notation
6.38443385 × 10^8
Engineering notation
6.38443385 × 10^6
Prime Factorization
5 × 61 × 2093257
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
638443385 Product of the distinct prime numbers
The prime factorization of 638443385 is 5 × 61 × 2093257.
Since it has a total of 3 prime factors.
6 , 5 , 74 , 74 , 912 , 146 , 9660 , 2929 , 26824 , 311 , 323710 , 445785 , 6056353 , 1132574 , 43441026 , 63475500 , 858458632 , 544554162 , 2016725150 , 1044036425
n×2
1276886770
n×3
1915330155
n×4
2553773540
n×5
3192216925
n÷2
319221692.5
n÷3
212814461.66667
n÷3
159610846.25
n÷5
127688677
n2
407609955850258225
n3
2.6023587997274E+26
n4
1.6614587610825E+35
n5
1.0607473554634E+44
2 √n25267.437246385
3 √n861.07463685797
4 √n158.95734410962
5 √n57.679897282015
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
-638443384 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 638443385 can be divided by 8 positive divisors.
The sum of these divisors (counting 638443385) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110000011011101111101111001
3
Ternary
1122111100021200022
4
Quaternary
212003131331321
5
Quinary
2301420142020
6
Senary
143204020225
8
Octal
4603357571
10
Decimal
638443385
12
Duodecimal
159991675
16
Hexadecimal
260ddf79
20
Vigesimal
9ja5895
36
Base36
ak422h
md5
a005d86a909b4a5ea585d7e7955c02b5
sha1
e8ef73db3745cf3312c5f1435044e1e4617f8f5f
sha256
0398cee1bd69c9efd3fbb32e51dd88449e96cf6c3190d10482611f85b227433d
sha512
ab6b4bf6f352e3c7fff41d1a42957118a5558ec2e62abb75e6d0b8820a22b11d2afb6e37292eb08eb87800d70271576e47bf2afe38b6341e9b9bf495aa6e528e
ripemd-160
a8c8f607c0243f63d6c77e805c55200d0137427e
Diameter
1276886770
Circumference
4011458096.098
Area
1.2805444428292E+18
Volume
1.0900735049638E+27
Surface area
5.1221777713169E+18
Circumference
4011458096.098
Perimeter
2553773540
Area
407609955850258225
Diagonal
902895293.87439
Surface area
2445659735101549350
Volume
2.6023587997274E+26
Space diagonal
1105816380.5763
Perimeter
1915330155
Area
1.7650028830089E+17
Altitude
552908190.28813
Surface area
1.7650028830089E+17
Volume
3.0669092572795E+25
Height
300965097.95813