638638861 (number)

638638861 is an odd 9-digits composite number following 638638860 and preceding 638638862. In scientific notation, it is written as 6.38638861 × 10^8. The sum of its digits is 49. It has a total of 3 prime factors and 8 positive divisors. There are 523604400 positive integers (up to 638638861) that are relatively prime to 638638861.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.38638861 × 10^8
Engineering notation 6.38638861 × 10^6

Prime Factorization of 638638861

Prime Factorization 7 × 23 × 3966701

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 638638861
Product of the distinct prime numbers

The prime factorization of 638638861 is 7 × 23 × 3966701. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 4, 29, 19, 476, 253, 1009, 9117, 43350, 64542, 833739, 679970, 293489, 3572105, 25171986, 56812418, 57573882, 548854344, 5647490867, 8237981926

Basic calculations (n = 638638861)

Multiplication

n×y
n×2 1277277722
n×3 1915916583
n×4 2554555444
n×5 3193194305

Division

n÷y
n÷2 319319430.5
n÷3 212879620.33333
n÷3 159659715.25
n÷5 127727772.2

Exponentiation

ny
n2 407859594779377321
n3 2.6047498705782E+26
n4 1.663494490536E+35
n5 1.0623722267157E+44

Nth Root

y√n
2√n 25271.305090952
3√n 861.1625080011
4√n 158.96950994122
5√n 57.683428888815

Divisors of 638638861

1, 7, 23, 161, 3966701, 27766907, 91234123, 638638861

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 -638638860
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 638638861 can be divided by 8 positive divisors. The sum of these divisors (counting 638638861) is 1, the average is 0.125.

Base conversion 638638861

Base System Value
2 Binary 100110000100001101101100001101
3 Ternary 1122111201012211011
4 Quaternary 212010031230031
5 Quinary 2301442420421
6 Senary 143212125221
8 Octal 4604155415
10 Decimal 638638861
12 Duodecimal 159a66811
16 Hexadecimal 2610db0d
20 Vigesimal 9jb9h31
36 Base36 ak88wd

Cryptographic Hash Functions

md5 87f8bb608c27228cee47226ea4c19f55
sha1 a81f9fadfc0feede4739877a857999971bdd156c
sha256 71ee5b485f662d23f133f211c0cd8abf417f0cefd71456dba53bbc136e7b0f2f
sha512 fed786bf253b1cfa8a543309d6a047c009f6b234c45760f736452eb7936d2a5d7fd9a556aa45977e5f8c1e1637c152e49b11ff8847671185855b32aeadd84a5a
ripemd-160 448cd05fbd5e783416fb8c3979e55bb7765d78f6

638638861 as geometric shapes

Circle

Radius = n
Diameter 1277277722
Circumference 4012686308.0291
Area 1.281328706655E+18

Sphere

Radius = n
Volume 1.0910750743797E+27
Surface area 5.12531482662E+18
Circumference 4012686308.0291

Square

Length = n
Perimeter 2554555444
Area 407859594779377321
Diagonal 903171738.68471

Cube

Length = n
Surface area 2447157568676263926
Volume 2.6047498705782E+26
Space diagonal 1106154954.9399

Equilateral Triangle

Length = n
Perimeter 1915916583
Area 1.7660838512808E+17
Altitude 553077477.46996

Triangular Pyramid

Length = n
Surface area 1.7660838512808E+17
Volume 3.0697271613011E+25
Height 301057246.22824