638640 (number)

638640 is an even 6-digits composite number following 638639 and preceding 638641. In scientific notation, it is written as 6.38640 × 10^5. The sum of its digits is 27. It has a total of 6 prime factors and 20 positive divisors. There are 170112 positive integers (up to 638640) that are relatively prime to 638640.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight thousand six hundred forty

Notation

Scientific notation 6.38640 × 10^5
Engineering notation 6.38640 × 10^3

Prime Factorization of 638640

Prime Factorization 2 × 2 × 2 × 2 × 45 × 887

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 79830
Product of the distinct prime numbers

The prime factorization of 638640 is 2 × 2 × 2 × 2 × 45 × 887. Since it has a total of 6 prime factors.

Most popular turbo-numbers

6, 2, 61, 86, 450, 933, 6838, 9317, 56998, 98774, 547531, 247137, 7728532, 3851323, 25419799, 50076281, 324487718, 733713729, 2611513501, 9444419640

Basic calculations (n = 638640)

Multiplication

n×y
n×2 1277280
n×3 1915920
n×4 2554560
n×5 3193200

Division

n÷y
n÷2 319320
n÷3 212880
n÷3 159660
n÷5 127728

Exponentiation

ny
n2 407861049600
n3 260476380716544000
n4 1.6635063578081E+23
n5 1.0623817003506E+29

Nth Root

y√n
2√n 799.14954795708
3√n 86.116301995633
4√n 28.269233239638
5√n 14.489427403193

Divisors of 638640

1, 2, 4, 8, 16, 45, 90, 180, 360, 720, 887, 1774, 3548, 7096, 14192, 39915, 79830, 159660, 319320, 638640

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -638639
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 638640 can be divided by 20 positive divisors. The sum of these divisors (counting 638640) is 1, the average is 0.05.

Base conversion 638640

Base System Value
2 Binary 10011011111010110000
3 Ternary 1012110001100
4 Quaternary 2123322300
5 Quinary 130414030
6 Senary 21404400
8 Octal 2337260
10 Decimal 638640
12 Duodecimal 269700
16 Hexadecimal 9beb0
20 Vigesimal 3jgc0
36 Base36 dos0

Cryptographic Hash Functions

md5 ee38e768825fed9053c1b75fb653ed4d
sha1 7e60f1092db43bcd264a4cf2d028201c9be5acd4
sha256 f6009d1caa8c465eede00036c721441dec17c2c2aa49b15a099f167589264239
sha512 2bbeb689f17b5f6daefa9bd023a15508069400ea4f25fcd41391c74942abdd971073fd600d1b8a4238aa57b7ef2b777bd27d644e1b9c93a79c55ae7463423df5
ripemd-160 3d80ec0207d10a5f7dd3ffa52324e1fcd0f4160b

638640 as geometric shapes

Circle

Radius = n
Diameter 1277280
Circumference 4012693.4645772
Area 1281333277108.8

Sphere

Radius = n
Volume 1.0910809121237E+18
Surface area 5125333108435.1
Circumference 4012693.4645772

Square

Length = n
Perimeter 2554560
Area 407861049600
Diagonal 903173.34947395

Cube

Length = n
Surface area 2447166297600
Volume 260476380716544000
Space diagonal 1106156.9277458

Equilateral Triangle

Length = n
Perimeter 1915920
Area 176609015083.89
Altitude 553078.46387289

Triangular Pyramid

Length = n
Surface area 176609015083.89
Volume 3.0697435857266E+16
Height 301057.78315798