638691261 (number)

638691261 is an odd 9-digits composite number following 638691260 and preceding 638691262. In scientific notation, it is written as 6.38691261 × 10^8. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 387866880 positive integers (up to 638691261) that are relatively prime to 638691261.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million six hundred ninety-one thousand two hundred sixty-one

Notation

Scientific notation 6.38691261 × 10^8
Engineering notation 6.38691261 × 10^6

Prime Factorization of 638691261

Prime Factorization 39 × 523 × 173 × 181

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 638691261
Product of the distinct prime numbers

The prime factorization of 638691261 is 39 × 523 × 173 × 181. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 9, 53, 26, 809, 207, 2568, 9426, 20207, 4132, 740097, 12108, 1347443, 2422627, 92119496, 96488884, 600459578, 480511558, 4812389887, 633298887

Basic calculations (n = 638691261)

Multiplication

n×y
n×2 1277382522
n×3 1916073783
n×4 2554765044
n×5 3193456305

Division

n÷y
n÷2 319345630.5
n÷3 212897087
n÷3 159672815.25
n÷5 127738252.2

Exponentiation

ny
n2 407926526877770121
n3 2.6053910784691E+26
n4 1.6640405133056E+35
n5 1.0628081337982E+44

Nth Root

y√n
2√n 25272.341818676
3√n 861.18606000838
4√n 158.97277068315
5√n 57.684375437063

Divisors of 638691261

1, 39, 173, 181, 523, 6747, 7059, 20397, 31313, 90479, 94663, 1221207, 3528681, 3691857, 16376699, 638691261

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -638691260
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 638691261 can be divided by 16 positive divisors. The sum of these divisors (counting 638691261) is 1, the average is 0.0625.

Base conversion 638691261

Base System Value
2 Binary 100110000100011010011110111101
3 Ternary 1122111210212200220
4 Quaternary 212010122132331
5 Quinary 2302001110021
6 Senary 143213211553
8 Octal 4604323675
10 Decimal 638691261
12 Duodecimal 159a90bb9
16 Hexadecimal 2611a7bd
20 Vigesimal 9jbg831
36 Base36 ak9dbx

Cryptographic Hash Functions

md5 8112f84e8b59e5f7eca146dd70a43d90
sha1 caa68ea3ea8cfad8025d0e7cf3880a07f280310b
sha256 f928ef833ea340c82494e974475a0a968120d14456840fc70fbccd50b81c3844
sha512 0acaafba2fb47d91a6848e695c6df24bd116f3d14f8f1b032a07ac5f2ad7a8a6dfd9630c6b5ac3302ea6b6a0cd723d7ea722d0853723f2d69dd512a80f097fa8
ripemd-160 7116fd8d7c89ec4e3a9a42d2e5b22976035e1024

638691261 as geometric shapes

Circle

Radius = n
Diameter 1277382522
Circumference 4013015546.9392
Area 1.2815389800436E+18

Sphere

Radius = n
Volume 1.0913436629129E+27
Surface area 5.1261559201744E+18
Circumference 4013015546.9392

Square

Length = n
Perimeter 2554765044
Area 407926526877770121
Diagonal 903245843.47537

Cube

Length = n
Surface area 2447559161266620726
Volume 2.6053910784691E+26
Space diagonal 1106245714.4022

Equilateral Triangle

Length = n
Perimeter 1916073783
Area 1.7663736757685E+17
Altitude 553122857.20112

Triangular Pyramid

Length = n
Surface area 1.7663736757685E+17
Volume 3.0704828320474E+25
Height 301081947.82512