387942781 (number)

387942781 is an odd 9-digits composite number following 387942780 and preceding 387942782. In scientific notation, it is written as 3.87942781 × 10^8. The sum of its digits is 49. It has a total of 2 prime factors and 4 positive divisors. There are 387892864 positive integers (up to 387942781) that are relatively prime to 387942781.

Interesting facts

Basic properties

Name

Name three hundred eighty-seven million nine hundred forty-two thousand seven hundred eighty-one

Notation

Scientific notation 3.87942781 × 10^8
Engineering notation 3.87942781 × 10^6

Prime Factorization of 387942781

Prime Factorization 9629 × 40289

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 387942781
Product of the distinct prime numbers

The prime factorization of 387942781 is 9629 × 40289. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 6, 96, 73, 528, 245, 1535, 1286, 54459, 79030, 826677, 990856, 4083238, 9206580, 30466126, 64373, 892091929, 170136922, 3925492931, 9975872847

Basic calculations (n = 387942781)

Multiplication

n×y
n×2 775885562
n×3 1163828343
n×4 1551771124
n×5 1939713905

Division

n÷y
n÷2 193971390.5
n÷3 129314260.33333
n÷3 96985695.25
n÷5 77588556.2

Exponentiation

ny
n2 150499601330013961
n3 5.8385233879357E+25
n4 2.2650130000493E+34
n5 8.7869544224028E+42

Nth Root

y√n
2√n 19696.263122735
3√n 729.32744774448
4√n 140.34337577077
5√n 52.209980974165

Divisors of 387942781

1, 9629, 40289, 387942781

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 -387942780
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 387942781 can be divided by 4 positive divisors. The sum of these divisors (counting 387942781) is 1, the average is 0.25.

Base conversion 387942781

Base System Value
2 Binary 10111000111111000100101111101
3 Ternary 1000000222112110011
4 Quaternary 113013320211331
5 Quinary 1243303132111
6 Senary 102254543221
8 Octal 2707704575
10 Decimal 387942781
12 Duodecimal a9b07b11
16 Hexadecimal 171f897d
20 Vigesimal 614cgj1
36 Base36 6eyykd

Cryptographic Hash Functions

md5 1edd6aaaa8f3d866228304661c1dd0b1
sha1 7ecf1d4205061988cdc7b811fcf60541be56abb9
sha256 6726770a0b716b3c52cdbd9f9b4b16cfcd5c772cb87a63b46e3d072a95e11fe7
sha512 47d4e2d6c8083edd2d77497b7409d5afc6edbf7302f769ccc4c0cc8193c3fe6a91d5bd13187874765e95e819fc14908e81cc4393c90a46a6b5ba325125a75857
ripemd-160 95bab2030bf90858488c64f4df34df37ee61a348

387942781 as geometric shapes

Circle

Radius = n
Diameter 775885562
Circumference 2437516381.6056
Area 4.7280844190656E+17

Sphere

Radius = n
Volume 2.4456349577801E+26
Surface area 1.8912337676263E+18
Circumference 2437516381.6056

Square

Length = n
Perimeter 1551771124
Area 150499601330013961
Diagonal 548633942.31494

Cube

Length = n
Surface area 902997607980083766
Volume 5.8385233879357E+25
Space diagonal 671936607.12157

Equilateral Triangle

Length = n
Perimeter 1163828343
Area 6.5168239005611E+16
Altitude 335968303.56078

Triangular Pyramid

Length = n
Surface area 6.5168239005611E+16
Volume 6.8807657995426E+24
Height 182877980.77165