638865561 (number)

638865561 is an odd 9-digits composite number following 638865560 and preceding 638865562. In scientific notation, it is written as 6.38865561 × 10^8. The sum of its digits is 48. It has a total of 3 prime factors and 8 positive divisors. There are 425748960 positive integers (up to 638865561) that are relatively prime to 638865561.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.38865561 × 10^8
Engineering notation 6.38865561 × 10^6

Prime Factorization of 638865561

Prime Factorization 3 × 2731 × 77977

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 638865561
Product of the distinct prime numbers

The prime factorization of 638865561 is 3 × 2731 × 77977. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 638865561)

Multiplication

n×y
n×2 1277731122
n×3 1916596683
n×4 2555462244
n×5 3194327805

Division

n÷y
n÷2 319432780.5
n÷3 212955187
n÷3 159716390.25
n÷5 127773112.2

Exponentiation

ny
n2 408149205031844721
n3 2.6075247084437E+26
n4 1.6658577356813E+35
n5 1.0642591368522E+44

Nth Root

y√n
2√n 25275.790017327
3√n 861.26439262743
4√n 158.98361556251
5√n 57.687523527506

Divisors of 638865561

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 -638865560
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 638865561 can be divided by 8 positive divisors. The sum of these divisors (counting 638865561) is 1, the average is 0.125.

Base conversion 638865561

Base System Value
2 Binary 100110000101000101000010011001
3 Ternary 1122112010201210110
4 Quaternary 212011011002121
5 Quinary 2302022144221
6 Senary 143221034533
8 Octal 4605050231
10 Decimal 638865561
12 Duodecimal 159b55a49
16 Hexadecimal 26145099
20 Vigesimal 9jci3i1
36 Base36 akd3tl

Cryptographic Hash Functions

md5 e9a1311cfb287869e4011813d023ab70
sha1 02ef5d297a07b2499e42b67c80cceb9a723f7cf6
sha256 870a4b96a97cca24da953c3752b6fef1b7224fdaef6c9555f08ce3e3dae4436b
sha512 eb5c5a8dffd5a5af775362ced4dddea8cbb4f38715237441e240efa07260e6f0ad893e2d77bb3f36325181a81fdc640b69e8b7e14ab2f05fe65a05051efc2d21
ripemd-160 4109f3778b32380c095f627b8c33fb5c35e08490

638865561 as geometric shapes

Circle

Radius = n
Diameter 1277731122
Circumference 4014110706.1382
Area 1.2822385440966E+18

Sphere

Radius = n
Volume 1.0922373957468E+27
Surface area 5.1289541763862E+18
Circumference 4014110706.1382

Square

Length = n
Perimeter 2555462244
Area 408149205031844721
Diagonal 903492340.8993

Cube

Length = n
Surface area 2448895230191068326
Volume 2.6075247084437E+26
Space diagonal 1106547610.858

Equilateral Triangle

Length = n
Perimeter 1916596683
Area 1.76733790046E+17
Altitude 553273805.429

Triangular Pyramid

Length = n
Surface area 1.76733790046E+17
Volume 3.0729973390867E+25
Height 301164113.6331