644920990 (number)

644920990 is an even 9-digits composite number following 644920989 and preceding 644920991. In scientific notation, it is written as 6.44920990 × 10^8. The sum of its digits is 43. It has a total of 5 prime factors and 32 positive divisors. There are 207277056 positive integers (up to 644920990) that are relatively prime to 644920990.

Interesting facts

Basic properties

Name

Name six hundred forty-four million nine hundred twenty thousand nine hundred ninety

Notation

Scientific notation 6.44920990 × 10^8
Engineering notation 6.44920990 × 10^6

Prime Factorization of 644920990

Prime Factorization 2 × 133 × 5 × 97 × 4999

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 644920990
Product of the distinct prime numbers

The prime factorization of 644920990 is 2 × 133 × 5 × 97 × 4999. Since it has a total of 5 prime factors.

Most popular turbo-numbers

Basic calculations (n = 644920990)

Multiplication

n×y
n×2 1289841980
n×3 1934762970
n×4 2579683960
n×5 3224604950

Division

n÷y
n÷2 322460495
n÷3 214973663.33333
n÷3 161230247.5
n÷5 128984198

Exponentiation

ny
n2 415923083342580100
n3 2.6823752667315E+26
n4 1.729920112572E+35
n5 1.1156617916208E+44

Nth Root

y√n
2√n 25395.294642906
3√n 863.97697894623
4√n 159.35901180324
5√n 57.79646844398

Divisors of 644920990

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -644920989
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 644920990 can be divided by 32 positive divisors. The sum of these divisors (counting 644920990) is 1, the average is 0.03125.

Base conversion 644920990

Base System Value
2 Binary 100110011100001011011010011110
3 Ternary 1122221112101021121
4 Quaternary 212130023122132
5 Quinary 2310044432430
6 Senary 143554521154
8 Octal 4634133236
10 Decimal 644920990
12 Duodecimal 15bb961ba
16 Hexadecimal 2670b69e
20 Vigesimal a1af29a
36 Base36 anyw7y

Cryptographic Hash Functions

md5 b62f01691b51ed8f26a29c348c497d3f
sha1 90e6173517519395e3c321c6a8931234e5d7d4d9
sha256 b886b23a55957211ee4b389df113425e020c372ccfb1a4ec3fca76f82fc97908
sha512 001397246c304fea01b6342edf679ab3dcbe23689e486ae7d04390f88db6d9493c20194f41de40c235e36d52a24f9b1050acc394500996127f7e66c0c5cde4ad
ripemd-160 26bae6556167e51c964b0adfe5bd1c57be81b200

644920990 as geometric shapes

Circle

Radius = n
Diameter 1289841980
Circumference 4052158088.6597
Area 1.3066609030875E+18

Sphere

Radius = n
Volume 1.1235907242846E+27
Surface area 5.2266436123499E+18
Circumference 4052158088.6597

Square

Length = n
Perimeter 2579683960
Area 415923083342580100
Diagonal 912056010.71708

Cube

Length = n
Surface area 2495538500055480600
Volume 2.6823752667315E+26
Space diagonal 1117035921.5476

Equilateral Triangle

Length = n
Perimeter 1934762970
Area 1.8009997809751E+17
Altitude 558517960.77381

Triangular Pyramid

Length = n
Surface area 1.8009997809751E+17
Volume 3.1612095679882E+25
Height 304018670.23903