638989891 (number)

638989891 is an odd 9-digits composite number following 638989890 and preceding 638989892. In scientific notation, it is written as 6.38989891 × 10^8. The sum of its digits is 61. It has a total of 2 prime factors and 4 positive divisors. There are 637396000 positive integers (up to 638989891) that are relatively prime to 638989891.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.38989891 × 10^8
Engineering notation 6.38989891 × 10^6

Prime Factorization of 638989891

Prime Factorization 401 × 1593491

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 638989891
Product of the distinct prime numbers

The prime factorization of 638989891 is 401 × 1593491. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 8, 40, 1, 920, 825, 3436, 7065, 21455, 69892, 344385, 455966, 3329102, 2801432, 59555579, 84505086, 580442399, 572711586, 6900929054, 298685968

Basic calculations (n = 638989891)

Multiplication

n×y
n×2 1277979782
n×3 1916969673
n×4 2555959564
n×5 3194949455

Division

n÷y
n÷2 319494945.5
n÷3 212996630.33333
n÷3 159747472.75
n÷5 127797978.2

Exponentiation

ny
n2 408308080800191881
n3 2.6090473604493E+26
n4 1.6671548884674E+35
n5 1.0652951204619E+44

Nth Root

y√n
2√n 25278.249365809
3√n 861.32025939234
4√n 158.99134997165
5√n 57.689768673272

Divisors of 638989891

1, 401, 1593491, 638989891

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -638989890
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 638989891 can be divided by 4 positive divisors. The sum of these divisors (counting 638989891) is 1, the average is 0.25.

Base conversion 638989891

Base System Value
2 Binary 100110000101100011011001000011
3 Ternary 1122112101001100021
4 Quaternary 212011203121003
5 Quinary 2302040134031
6 Senary 143223434311
8 Octal 4605433103
10 Decimal 638989891
12 Duodecimal 159bb5997
16 Hexadecimal 26163643
20 Vigesimal 9jddeeb
36 Base36 akfrr7

Cryptographic Hash Functions

md5 68f94b191498b9c9cfccb907d9f20e7a
sha1 68db555151cca2cb3e18df41d3271556f5da1a13
sha256 c8036e777158db641e82142c7cda265bce9a173789ab2609f672f057739b472e
sha512 8cc7787cd03531568e1519ce807a795815d283f0d8569bcb1feb7ba9eece139191117b87013eada230fcca113159562c76ffb6c5c221023abee5c22d0918b21a
ripemd-160 02e9e2fa5f2cc2f1ad9038af5b01e26eb8013d9d

638989891 as geometric shapes

Circle

Radius = n
Diameter 1277979782
Circumference 4014891894.5675
Area 1.2827376670432E+18

Sphere

Radius = n
Volume 1.0928752027274E+27
Surface area 5.1309506681729E+18
Circumference 4014891894.5675

Square

Length = n
Perimeter 2555959564
Area 408308080800191881
Diagonal 903668170.07151

Cube

Length = n
Surface area 2449848484801151286
Volume 2.6090473604493E+26
Space diagonal 1106762956.7349

Equilateral Triangle

Length = n
Perimeter 1916969673
Area 1.7680258527172E+17
Altitude 553381478.36745

Triangular Pyramid

Length = n
Surface area 1.7680258527172E+17
Volume 3.0747918016843E+25
Height 301222723.35717