638997989 (number)

638997989 is an odd 9-digits composite number following 638997988 and preceding 638997990. In scientific notation, it is written as 6.38997989 × 10^8. The sum of its digits is 68. It has a total of 3 prime factors and 8 positive divisors. There are 515494080 positive integers (up to 638997989) that are relatively prime to 638997989.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million nine hundred ninety-seven thousand nine hundred eighty-nine

Notation

Scientific notation 6.38997989 × 10^8
Engineering notation 6.38997989 × 10^6

Prime Factorization of 638997989

Prime Factorization 7 × 17 × 5369731

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 638997989
Product of the distinct prime numbers

The prime factorization of 638997989 is 7 × 17 × 5369731. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 638997989)

Multiplication

n×y
n×2 1277995978
n×3 1916993967
n×4 2555991956
n×5 3194989945

Division

n÷y
n÷2 319498994.5
n÷3 212999329.66667
n÷3 159749497.25
n÷5 127799597.8

Exponentiation

ny
n2 408318429946044121
n3 2.6091465560716E+26
n4 1.667239402336E+35
n5 1.0653626252743E+44

Nth Root

y√n
2√n 25278.409542533
3√n 861.3238979173
4√n 158.99185369865
5√n 57.689914894483

Divisors of 638997989

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 -638997988
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 638997989 can be divided by 8 positive divisors. The sum of these divisors (counting 638997989) is 1, the average is 0.125.

Base conversion 638997989

Base System Value
2 Binary 100110000101100101010111100101
3 Ternary 1122112101110110012
4 Quaternary 212011211113211
5 Quinary 2302040413424
6 Senary 143223540005
8 Octal 4605452745
10 Decimal 638997989
12 Duodecimal 159bba605
16 Hexadecimal 261655e5
20 Vigesimal 9jdeej9
36 Base36 akfy05

Cryptographic Hash Functions

md5 517cd1f9f28f7a47b7e19c056f20c74a
sha1 dc7809b1da9a1d1b9b828d3b6427118afaf97e61
sha256 44aac94549767a4f4832b4b16b89732722c457fa6d6e1ff78eb3a34c240045e5
sha512 57818cf933232f5b9622c45c85b3bf22469ad7b3b873ca45b8616cdf38f8ef4ee1c6b77edbeb75782b03cf1acaa1bf220b5888b39459b264f6db18c80db66af7
ripemd-160 69e8cc8682354ea2578493eb44d2fc6cf4fac581

638997989 as geometric shapes

Circle

Radius = n
Diameter 1277995978
Circumference 4014942775.8021
Area 1.2827701798438E+18

Sphere

Radius = n
Volume 1.0929167536925E+27
Surface area 5.1310807193752E+18
Circumference 4014942775.8021

Square

Length = n
Perimeter 2555991956
Area 408318429946044121
Diagonal 903679622.37293

Cube

Length = n
Surface area 2449910579676264726
Volume 2.6091465560716E+26
Space diagonal 1106776982.8823

Equilateral Triangle

Length = n
Perimeter 1916993967
Area 1.7680706658333E+17
Altitude 553388491.44117

Triangular Pyramid

Length = n
Surface area 1.7680706658333E+17
Volume 3.0749087048463E+25
Height 301226540.79098