638992021 (number)

638992021 is an odd 9-digits composite number following 638992020 and preceding 638992022. In scientific notation, it is written as 6.38992021 × 10^8. The sum of its digits is 40. It has a total of 3 prime factors and 6 positive divisors. There are 605360520 positive integers (up to 638992021) that are relatively prime to 638992021.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million nine hundred ninety-two thousand twenty-one

Notation

Scientific notation 6.38992021 × 10^8
Engineering notation 6.38992021 × 10^6

Prime Factorization of 638992021

Prime Factorization 19 × 19 × 1770061

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 33631159
Product of the distinct prime numbers

The prime factorization of 638992021 is 19 × 19 × 1770061. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 1, 24, 64, 780, 473, 1713, 4882, 28085, 65072, 191236, 129961, 8441901, 7905857, 4860331, 18803453, 649263681, 513921069, 2716317731, 5648789070

Basic calculations (n = 638992021)

Multiplication

n×y
n×2 1277984042
n×3 1916976063
n×4 2555968084
n×5 3194960105

Division

n÷y
n÷2 319496010.5
n÷3 212997340.33333
n÷3 159748005.25
n÷5 127798404.2

Exponentiation

ny
n2 408310802901664441
n3 2.6090734514227E+26
n4 1.667177117662E+35
n5 1.0653128757798E+44

Nth Root

y√n
2√n 25278.291496856
3√n 861.32121642893
4√n 158.99148246637
5√n 57.689807133675

Divisors of 638992021

1, 19, 361, 1770061, 33631159, 638992021

6 divisors

τ Total Divisors 6
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -638992020
Sum of the proper positive divisors of n
A Arithmetic Mean 0.16666666666667
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 6
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 638992021 can be divided by 6 positive divisors. The sum of these divisors (counting 638992021) is 1, the average is 0.16666666666667.

Base conversion 638992021

Base System Value
2 Binary 100110000101100011111010010101
3 Ternary 1122112101011021011
4 Quaternary 212011203322111
5 Quinary 2302040221041
6 Senary 143223452221
8 Octal 4605437225
10 Decimal 638992021
12 Duodecimal 159bb7071
16 Hexadecimal 26163e95
20 Vigesimal 9jde011
36 Base36 akfted

Cryptographic Hash Functions

md5 e950a496e6cee1d8ac19d3fdd36610e7
sha1 8da8a50622038faab4acf7b176012480e0c93d04
sha256 4515d90640bebecbfb748558737daa84603a08781a6d030443281a95ef12a577
sha512 fcdf5d351d15452712d143c488b827cd7acf89188497af521e2671781b879ac461ee6446e21b3def0da3a4c455100ee0ac32a63d06b34a325dcb5f847ac85c93
ripemd-160 0e9e34917a54afe75dc437803fea92a2268c7753

638992021 as geometric shapes

Circle

Radius = n
Diameter 1277984042
Circumference 4014905277.7522
Area 1.2827462187772E+18

Sphere

Radius = n
Volume 1.0928861316888E+27
Surface area 5.1309848751089E+18
Circumference 4014905277.7522

Square

Length = n
Perimeter 2555968084
Area 408310802901664441
Diagonal 903671182.34639

Cube

Length = n
Surface area 2449864817409986646
Volume 2.6090734514227E+26
Space diagonal 1106766646.0031

Equilateral Triangle

Length = n
Perimeter 1916976063
Area 1.7680376397623E+17
Altitude 553383323.00156

Triangular Pyramid

Length = n
Surface area 1.7680376397623E+17
Volume 3.0748225501913E+25
Height 301223727.4488