638991689 (number)

638991689 is an odd 9-digits composite number following 638991688 and preceding 638991690. In scientific notation, it is written as 6.38991689 × 10^8. The sum of its digits is 59. It has a total of 3 prime factors and 8 positive divisors. There are 547035120 positive integers (up to 638991689) that are relatively prime to 638991689.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.38991689 × 10^8
Engineering notation 6.38991689 × 10^6

Prime Factorization of 638991689

Prime Factorization 7 × 821 × 111187

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 638991689
Product of the distinct prime numbers

The prime factorization of 638991689 is 7 × 821 × 111187. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 1, 43, 57, 867, 461, 7968, 8580, 63537, 36412, 714435, 263336, 480425, 344479, 42831201, 71323634, 571796132, 189177486, 1161974956, 157927825

Basic calculations (n = 638991689)

Multiplication

n×y
n×2 1277983378
n×3 1916975067
n×4 2555966756
n×5 3194958445

Division

n÷y
n÷2 319495844.5
n÷3 212997229.66667
n÷3 159747922.25
n÷5 127798337.8

Exponentiation

ny
n2 408310378611072721
n3 2.6090693846492E+26
n4 1.6671736528152E+35
n5 1.0653101082687E+44

Nth Root

y√n
2√n 25278.284929955
3√n 861.32106725717
4√n 158.99146181464
5√n 57.689801138914

Divisors of 638991689

1, 7, 821, 5747, 111187, 778309, 91284527, 638991689

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 -638991688
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 638991689 can be divided by 8 positive divisors. The sum of these divisors (counting 638991689) is 1, the average is 0.125.

Base conversion 638991689

Base System Value
2 Binary 100110000101100011110101001001
3 Ternary 1122112101010210212
4 Quaternary 212011203311021
5 Quinary 2302040213224
6 Senary 143223450505
8 Octal 4605436511
10 Decimal 638991689
12 Duodecimal 159bb6a35
16 Hexadecimal 26163d49
20 Vigesimal 9jddj49
36 Base36 akft55

Cryptographic Hash Functions

md5 54ec96747b4e125e986b3f364367ec34
sha1 7897ccbc8a751da97b8a977f2783715ef82e59a8
sha256 b7de357e7633ad6ddd4948c2909a97fe0d5e81576d0edd547ccc1c3f175892b0
sha512 94becc4c0789bfa56bb41a2912e67d4b59dcac38c1e9277e9da4849af391fcb462f900f486e85cab8e98eaa86a18a63e6c29c2908517bb0b6565ef18c91fca20
ripemd-160 5c2c524ae9f5db2a1a845608986bde5ce1a0b7fe

638991689 as geometric shapes

Circle

Radius = n
Diameter 1277983378
Circumference 4014903191.7347
Area 1.282744885829E+18

Sphere

Radius = n
Volume 1.0928844282027E+27
Surface area 5.1309795433161E+18
Circumference 4014903191.7347

Square

Length = n
Perimeter 2555966756
Area 408310378611072721
Diagonal 903670712.82749

Cube

Length = n
Surface area 2449862271666436326
Volume 2.6090693846492E+26
Space diagonal 1106766070.9623

Equilateral Triangle

Length = n
Perimeter 1916975067
Area 1.7680358025302E+17
Altitude 553383035.48113

Triangular Pyramid

Length = n
Surface area 1.7680358025302E+17
Volume 3.0748177574528E+25
Height 301223570.9425