128540987 (number)

128540987 is an odd 9-digits composite number following 128540986 and preceding 128540988. In scientific notation, it is written as 1.28540987 × 10^8. The sum of its digits is 44. It has a total of 2 prime factors and 4 positive divisors. There are 128051976 positive integers (up to 128540987) that are relatively prime to 128540987.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million five hundred forty thousand nine hundred eighty-seven

Notation

Scientific notation 1.28540987 × 10^8
Engineering notation 1.28540987 × 10^6

Prime Factorization of 128540987

Prime Factorization 263 × 488749

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128540987
Product of the distinct prime numbers

The prime factorization of 128540987 is 263 × 488749. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128540987)

Multiplication

n×y
n×2 257081974
n×3 385622961
n×4 514163948
n×5 642704935

Division

n÷y
n÷2 64270493.5
n÷3 42846995.666667
n÷3 32135246.75
n÷5 25708197.4

Exponentiation

ny
n2 16522785338934169
n3 2.1238551354557E+24
n4 2.730024353565E+32
n5 3.5092002494128E+40

Nth Root

y√n
2√n 11337.591763686
3√n 504.67742298314
4√n 106.47812810003
5√n 41.860877322228

Divisors of 128540987

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 -128540986
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 128540987 can be divided by 4 positive divisors. The sum of these divisors (counting 128540987) is 1, the average is 0.25.

Base conversion 128540987

Base System Value
2 Binary 111101010010110000100111011
3 Ternary 22221212120002022
4 Quaternary 13222112010323
5 Quinary 230401302422
6 Senary 20431025055
8 Octal 752260473
10 Decimal 128540987
12 Duodecimal 3706b18b
16 Hexadecimal 7a9613b
20 Vigesimal 2037c97
36 Base36 24j2uz

Cryptographic Hash Functions

md5 04457811f3548a9cabdeb4dc89a3de5c
sha1 8f159912f8789f745e4fe509edf1e91360521b82
sha256 1c9de2cdc1de696515ffff1f5b2eccc14156052b078f6796ed3be49d86cfd676
sha512 ee1577d52ec96374833e6e6f59ed1b91dfb421b56e0d581c2d80d59d3c57da604411f915efa062bbfa0456d4fde91e1f8ff77f4fccede4363be751c19d5a8b33
ripemd-160 f122100aa8da099b36d1a8067e4be261558a777a

128540987 as geometric shapes

Circle

Radius = n
Diameter 257081974
Circumference 807646840.88876
Area 5.1907861037637E+16

Sphere

Radius = n
Volume 8.8963835877822E+24
Surface area 2.0763144415055E+17
Circumference 807646840.88876

Square

Length = n
Perimeter 514163948
Area 16522785338934169
Diagonal 181784407.13622

Cube

Length = n
Surface area 99136712033605014
Volume 2.1238551354557E+24
Space diagonal 222639520.33905

Equilateral Triangle

Length = n
Perimeter 385622961
Area 7.154575922397E+15
Altitude 111319760.16953

Triangular Pyramid

Length = n
Surface area 7.154575922397E+15
Volume 2.5029872808977E+23
Height 60594802.378741