387865981 (number)

387865981 is an odd 9-digits composite number following 387865980 and preceding 387865982. In scientific notation, it is written as 3.87865981 × 10^8. The sum of its digits is 55. It has a total of 4 prime factors and 12 positive divisors. There are 354771648 positive integers (up to 387865981) that are relatively prime to 387865981.

Interesting facts

Basic properties

Name

Name three hundred eighty-seven million eight hundred sixty-five thousand nine hundred eighty-one

Notation

Scientific notation 3.87865981 × 10^8
Engineering notation 3.87865981 × 10^6

Prime Factorization of 387865981

Prime Factorization 19 × 19 × 29 × 37049

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20413999
Product of the distinct prime numbers

The prime factorization of 387865981 is 19 × 19 × 29 × 37049. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 9, 1, 20, 392, 711, 4545, 1179, 68831, 64574, 810450, 538295, 2922066, 8410545, 37829903, 20404851, 363270356, 681004097, 1034257295, 9741014307

Basic calculations (n = 387865981)

Multiplication

n×y
n×2 775731962
n×3 1163597943
n×4 1551463924
n×5 1939329905

Division

n÷y
n÷2 193932990.5
n÷3 129288660.33333
n÷3 96966495.25
n÷5 77573196.2

Exponentiation

ny
n2 150440019217092361
n3 5.8350565635296E+25
n4 2.2632199382039E+34
n5 8.7782602155022E+42

Nth Root

y√n
2√n 19694.313417837
3√n 729.27931689689
4√n 140.3364294039
5√n 52.207913636253

Divisors of 387865981

1, 19, 29, 361, 551, 10469, 37049, 703931, 1074421, 13374689, 20413999, 387865981

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -387865980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 387865981 can be divided by 12 positive divisors. The sum of these divisors (counting 387865981) is 1, the average is 0.083333333333333.

Base conversion 387865981

Base System Value
2 Binary 10111000111100101110101111101
3 Ternary 1000000211122002201
4 Quaternary 113013211311331
5 Quinary 1243243202411
6 Senary 102253151501
8 Octal 2707456575
10 Decimal 387865981
12 Duodecimal a9a8b591
16 Hexadecimal 171e5d7d
20 Vigesimal 61434j1
36 Base36 6exbb1

Cryptographic Hash Functions

md5 af898750d37a0752205e3afd2fc40e06
sha1 2a79627752ab00dafeeecda3e9fbe35c2d70ad0c
sha256 18966e25962f0e445760fe7e1f8ea13b9cfc9b96cc2b82f89efa6a6f132f9b65
sha512 dfa781905c67727afa09f4847c9ada9edc77a412cf90e6324a7a23a0ea87013e13a837cc99cafd3e932eec0e015272a19bb07f6ea72df33c8959103053794f83
ripemd-160 821547fc48f242146cb4b15a34e9abb54f2ce45e

387865981 as geometric shapes

Circle

Radius = n
Diameter 775731962
Circumference 2437033832.974
Area 4.7262125917832E+17

Sphere

Radius = n
Volume 2.4441827777687E+26
Surface area 1.8904850367133E+18
Circumference 2437033832.974

Square

Length = n
Perimeter 1551463924
Area 150440019217092361
Diagonal 548525330.71335

Cube

Length = n
Surface area 902640115302554166
Volume 5.8350565635296E+25
Space diagonal 671803585.61954

Equilateral Triangle

Length = n
Perimeter 1163597943
Area 6.5142439193911E+16
Altitude 335901792.80977

Triangular Pyramid

Length = n
Surface area 6.5142439193911E+16
Volume 6.8766801077981E+24
Height 182841776.90445