644438861 (number)

644438861 is an odd 9-digits composite number following 644438860 and preceding 644438862. In scientific notation, it is written as 6.44438861 × 10^8. The sum of its digits is 44. It has a total of 4 prime factors and 12 positive divisors. There are 571560000 positive integers (up to 644438861) that are relatively prime to 644438861.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.44438861 × 10^8
Engineering notation 6.44438861 × 10^6

Prime Factorization of 644438861

Prime Factorization 11 × 11 × 41 × 129901

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 58585351
Product of the distinct prime numbers

The prime factorization of 644438861 is 11 × 11 × 41 × 129901. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 8, 76, 96, 865, 461, 6666, 5602, 22117, 17567, 983404, 124307, 9969683, 8424336, 85709059, 35425405, 28488519, 608143269, 7361024852, 7453870738

Basic calculations (n = 644438861)

Multiplication

n×y
n×2 1288877722
n×3 1933316583
n×4 2577755444
n×5 3222194305

Division

n÷y
n÷2 322219430.5
n÷3 214812953.66667
n÷3 161109715.25
n÷5 128887772.2

Exponentiation

ny
n2 415301445566977321
n3 2.6763639055284E+26
n4 1.7247529069002E+35
n5 1.1114977988292E+44

Nth Root

y√n
2√n 25385.800381316
3√n 863.76162843181
4√n 159.32922011143
5√n 57.787824380499

Divisors of 644438861

1, 11, 41, 121, 451, 4961, 129901, 1428911, 5325941, 15718021, 58585351, 644438861

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -644438860
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 644438861 can be divided by 12 positive divisors. The sum of these divisors (counting 644438861) is 1, the average is 0.083333333333333.

Base conversion 644438861

Base System Value
2 Binary 100110011010010101101101001101
3 Ternary 1122220121212220222
4 Quaternary 212122111231031
5 Quinary 2304434020421
6 Senary 143540321125
8 Octal 4632255515
10 Decimal 644438861
12 Duodecimal 15b9a31a5
16 Hexadecimal 26695b4d
20 Vigesimal a17eh31
36 Base36 anok7h

Cryptographic Hash Functions

md5 381091f690bbb7e676a4937bf616ec9d
sha1 14180c424c67c17117f539a3ba831b5571373bdb
sha256 c817f5c1a72ca365eadb0547b0d8c22604d37b86eaf35b216162010e5fd1e7d2
sha512 cef335c9f3be3af9ef5f367d41a1dd8a8aa658d712975ceee4e35746bfb6c4a684d94c0c03977100b522177202337f5776bc8b4b8e06cea84d15ed359d08a09e
ripemd-160 8af5cefb123daf90a435429c64d9460a9c5a934f

644438861 as geometric shapes

Circle

Radius = n
Diameter 1288877722
Circumference 4049128782.8107
Area 1.3047079704184E+18

Sphere

Radius = n
Volume 1.1210726911921E+27
Surface area 5.2188318816737E+18
Circumference 4049128782.8107

Square

Length = n
Perimeter 2577755444
Area 415301445566977321
Diagonal 911374177.34647

Cube

Length = n
Surface area 2491808673401863926
Volume 2.6763639055284E+26
Space diagonal 1116200849.6238

Equilateral Triangle

Length = n
Perimeter 1933316583
Area 1.798308010447E+17
Altitude 558100424.81191

Triangular Pyramid

Length = n
Surface area 1.798308010447E+17
Volume 3.15412511087E+25
Height 303791392.44882