638994915 (number)

638994915 is an odd 9-digits composite number following 638994914 and preceding 638994916. In scientific notation, it is written as 6.38994915 × 10^8. The sum of its digits is 54. It has a total of 5 prime factors and 32 positive divisors. There are 310003200 positive integers (up to 638994915) that are relatively prime to 638994915.

Interesting facts

Basic properties

Name

Name six hundred thirty-eight million nine hundred ninety-four thousand nine hundred fifteen

Notation

Scientific notation 6.38994915 × 10^8
Engineering notation 6.38994915 × 10^6

Prime Factorization of 638994915

Prime Factorization 15 × 39 × 13 × 73 × 1151

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 638994915
Product of the distinct prime numbers

The prime factorization of 638994915 is 15 × 39 × 13 × 73 × 1151. Since it has a total of 5 prime factors.

Most popular turbo-numbers

Basic calculations (n = 638994915)

Multiplication

n×y
n×2 1277989830
n×3 1916984745
n×4 2555979660
n×5 3194974575

Division

n÷y
n÷2 319497457.5
n÷3 212998305
n÷3 159748728.75
n÷5 127798983

Exponentiation

ny
n2 408314501395857225
n3 2.6091089011271E+26
n4 1.6672073205015E+35
n5 1.0653370000512E+44

Nth Root

y√n
2√n 25278.348739583
3√n 861.3225167372
4√n 158.99166248449
5√n 57.6898593891

Divisors of 638994915

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 -638994914
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 638994915 can be divided by 32 positive divisors. The sum of these divisors (counting 638994915) is 1, the average is 0.03125.

Base conversion 638994915

Base System Value
2 Binary 100110000101100100100111100011
3 Ternary 1122112101022020100
4 Quaternary 212011210213203
5 Quinary 2302040314130
6 Senary 143223513443
8 Octal 4605444743
10 Decimal 638994915
12 Duodecimal 159bb8883
16 Hexadecimal 261649e3
20 Vigesimal 9jde75f
36 Base36 akfvmr

Cryptographic Hash Functions

md5 9369d245ef6eec697d45ac4d7bf49d1e
sha1 34876a7418f970187ffd9dcc3eaaa1efdc8d21da
sha256 1ca9df84c0d1fac0f0c18870300cc6a8e2df8aece22bf404c65bde4544100431
sha512 d99c61a31f2a65540c68663c1cb333cc58dfd5d5478c4f48b2aa9d28a5b406d6aa29b8923023e3f25c50283c6e492aa7d4902eb8251938c39a7304c96e7c4ebe
ripemd-160 ff21c1bfd49a7583a9b414ffdbb8894cb2a833af

638994915 as geometric shapes

Circle

Radius = n
Diameter 1277989830
Circumference 4014923461.2905
Area 1.2827578379394E+18

Sphere

Radius = n
Volume 1.0929009808262E+27
Surface area 5.1310313517576E+18
Circumference 4014923461.2905

Square

Length = n
Perimeter 2555979660
Area 408314501395857225
Diagonal 903675275.08044

Cube

Length = n
Surface area 2449887008375143350
Volume 2.6091089011271E+26
Space diagonal 1106771658.5582

Equilateral Triangle

Length = n
Perimeter 1916984745
Area 1.7680536547119E+17
Altitude 553385829.27908

Triangular Pyramid

Length = n
Surface area 1.7680536547119E+17
Volume 3.0748643280686E+25
Height 301225091.69348