638561645 (number)

638561645 is an odd 9-digits composite number following 638561644 and preceding 638561646. In scientific notation, it is written as 6.38561645 × 10^8. The sum of its digits is 44. It has a total of 3 prime factors and 8 positive divisors. There are 510745104 positive integers (up to 638561645) that are relatively prime to 638561645.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million five hundred sixty-one thousand six hundred forty-five

Notation

Scientific notation 6.38561645 × 10^8
Engineering notation 6.38561645 × 10^6

Prime Factorization of 638561645

Prime Factorization 5 × 6547 × 19507

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 638561645
Product of the distinct prime numbers

The prime factorization of 638561645 is 5 × 6547 × 19507. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 638561645)

Multiplication

n×y
n×2 1277123290
n×3 1915684935
n×4 2554246580
n×5 3192808225

Division

n÷y
n÷2 319280822.5
n÷3 212853881.66667
n÷3 159640411.25
n÷5 127712329

Exponentiation

ny
n2 407760974465106025
n3 2.6038051862124E+26
n4 1.6626901229673E+35
n5 1.0617301400473E+44

Nth Root

y√n
2√n 25269.777304124
3√n 861.12779970277
4√n 158.96470458603
5√n 57.682033953635

Divisors of 638561645

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 -638561644
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 638561645 can be divided by 8 positive divisors. The sum of these divisors (counting 638561645) is 1, the average is 0.125.

Base conversion 638561645

Base System Value
2 Binary 100110000011111010110101101101
3 Ternary 1122111120021220022
4 Quaternary 212003322311231
5 Quinary 2301432433040
6 Senary 143210331525
8 Octal 4603726555
10 Decimal 638561645
12 Duodecimal 159a29ba5
16 Hexadecimal 260fad6d
20 Vigesimal 9jb0425
36 Base36 ak6lbh

Cryptographic Hash Functions

md5 a80b5e5ef6faac18752e552359447bb6
sha1 5d859fc6ba380d0c24cca67987fa2d4668e202e2
sha256 d61f5ea72bb215e280e9ba7f9e3f98a535200b77974b45b48a580751c679accc
sha512 4066906ff9e8b983e142d00d6aebe92f929447ae874f22cf1259862d46bf45558f152624e7ecff8e331353ee0c19eb77d194d8806c5b8933be1aa424ce52b71f
ripemd-160 5292364ba2fae021f379db0ba6e9c91e129cd1df

638561645 as geometric shapes

Circle

Radius = n
Diameter 1277123290
Circumference 4012201145.5924
Area 1.2810188818002E+18

Sphere

Radius = n
Volume 1.0906793659179E+27
Surface area 5.1240755272008E+18
Circumference 4012201145.5924

Square

Length = n
Perimeter 2554246580
Area 407760974465106025
Diagonal 903062538.77027

Cube

Length = n
Surface area 2446565846790636150
Volume 2.6038051862124E+26
Space diagonal 1106021212.9048

Equilateral Triangle

Length = n
Perimeter 1915684935
Area 1.7656568127934E+17
Altitude 553010606.45238

Triangular Pyramid

Length = n
Surface area 1.7656568127934E+17
Volume 3.0686138400992E+25
Height 301020846.25676