638777781 (number)

638777781 is an odd 9-digits composite number following 638777780 and preceding 638777782. In scientific notation, it is written as 6.38777781 × 10^8. The sum of its digits is 54. It has a total of 5 prime factors and 24 positive divisors. There are 406486080 positive integers (up to 638777781) that are relatively prime to 638777781.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million seven hundred seventy-seven thousand seven hundred eighty-one

Notation

Scientific notation 6.38777781 × 10^8
Engineering notation 6.38777781 × 10^6

Prime Factorization of 638777781

Prime Factorization 3 × 3 × 23 × 521 × 5923

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 212925927
Product of the distinct prime numbers

The prime factorization of 638777781 is 3 × 3 × 23 × 521 × 5923. Since it has a total of 5 prime factors.

Most popular turbo-numbers

9, 1, 75, 83, 709, 79, 5779, 6735, 3249, 94241, 153204, 536064, 1360619, 2218560, 11177295, 86553741, 136286623, 20561332, 767227026, 3481091408

Basic calculations (n = 638777781)

Multiplication

n×y
n×2 1277555562
n×3 1916333343
n×4 2555111124
n×5 3193888905

Division

n÷y
n÷2 319388890.5
n÷3 212925927
n÷3 159694445.25
n÷5 127755556.2

Exponentiation

ny
n2 408037053499283961
n3 2.6064500360005E+26
n4 1.6649423702838E+35
n5 1.0635281927828E+44

Nth Root

y√n
2√n 25274.053513435
3√n 861.22494496905
4√n 158.97815420188
5√n 57.685938189541

Divisors of 638777781

1, 3, 9, 23, 69, 207, 521, 1563, 4689, 5923, 11983, 17769, 35949, 53307, 107847, 136229, 408687, 1226061, 3085883, 9257649, 27772947, 70975309, 212925927, 638777781

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -638777780
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 638777781 can be divided by 24 positive divisors. The sum of these divisors (counting 638777781) is 1, the average is 0.041666666666667.

Base conversion 638777781

Base System Value
2 Binary 100110000100101111100110110101
3 Ternary 1122111222021101100
4 Quaternary 212010233212311
5 Quinary 2302011342111
6 Senary 143215120313
8 Octal 4604574665
10 Decimal 638777781
12 Duodecimal 159b13099
16 Hexadecimal 2612f9b5
20 Vigesimal 9jc7491
36 Base36 akb839

Cryptographic Hash Functions

md5 1205ad09ef383a01edfbb48e1b6bc3a2
sha1 f43d3daf8965a20360d66a87f3500ad5e527f9b5
sha256 3166c1fa28bc2a93134d85e3c91e7eda210658254bc3ac7ed57c2b7981fd509b
sha512 f2ab0800f17b3d2d33f2c9160e9b9fb7332e830cd66abe641643a0dee2085e5ee73e2886d865ccbb36f992a99f102f2922fee25100fa06570c81b51a8673ae49
ripemd-160 02315c4fc474e324d18243c858dc3916c6afb4b4

638777781 as geometric shapes

Circle

Radius = n
Diameter 1277555562
Circumference 4013559168.132
Area 1.2818862096658E+18

Sphere

Radius = n
Volume 1.0917872380064E+27
Surface area 5.1275448386631E+18
Circumference 4013559168.132

Square

Length = n
Perimeter 2555111124
Area 408037053499283961
Diagonal 903368201.23279

Cube

Length = n
Surface area 2448222320995703766
Volume 2.6064500360005E+26
Space diagonal 1106395571.4381

Equilateral Triangle

Length = n
Perimeter 1916333343
Area 1.7668522700786E+17
Altitude 553197785.71905

Triangular Pyramid

Length = n
Surface area 1.7668522700786E+17
Volume 3.0717308254665E+25
Height 301122733.74426