128307987 (number)

128307987 is an odd 9-digits composite number following 128307986 and preceding 128307988. In scientific notation, it is written as 1.28307987 × 10^8. The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors. There are 85467888 positive integers (up to 128307987) that are relatively prime to 128307987.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million three hundred seven thousand nine hundred eighty-seven

Notation

Scientific notation 1.28307987 × 10^8
Engineering notation 1.28307987 × 10^6

Prime Factorization of 128307987

Prime Factorization 9 × 1367 × 10429

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128307987
Product of the distinct prime numbers

The prime factorization of 128307987 is 9 × 1367 × 10429. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128307987)

Multiplication

n×y
n×2 256615974
n×3 384923961
n×4 513231948
n×5 641539935

Division

n÷y
n÷2 64153993.5
n÷3 42769329
n÷3 32076996.75
n÷5 25661597.4

Exponentiation

ny
n2 16462939527992169
n3 2.1123266309394E+24
n4 2.7102837790233E+32
n5 3.4775105588523E+40

Nth Root

y√n
2√n 11327.311552173
3√n 504.37230380486
4√n 106.42984333435
5√n 41.845690471272

Divisors of 128307987

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128307986
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128307987 can be divided by 8 positive divisors. The sum of these divisors (counting 128307987) is 1, the average is 0.125.

Base conversion 128307987

Base System Value
2 Binary 111101001011101001100010011
3 Ternary 22221102201110200
4 Quaternary 13221131030103
5 Quinary 230321323422
6 Senary 20422030243
8 Octal 751351423
10 Decimal 128307987
12 Duodecimal 36b78383
16 Hexadecimal 7a5d313
20 Vigesimal 201i9j7
36 Base36 24e32r

Cryptographic Hash Functions

md5 4f369d987c9f23993b791daaf3c8342e
sha1 15eea2fc3dd918b2cba68651665cbadef6287d6f
sha256 096274dadfdff998fd48bfc62232653249109d5b2b8d46ba0c98cb880f2253c5
sha512 13c7b9dc53325838602a5da1a1fc6e206b2a404bd6f5d1539ad48b7d9563037586c85942dddde90948af681fc807c59fe509c4c402a9ff56afeb496e7e22a6d0
ripemd-160 8d640d48e9d927d74935a5a091b948ee0f2960af

128307987 as geometric shapes

Circle

Radius = n
Diameter 256615974
Circumference 806182858.71219
Area 5.1719849877633E+16

Sphere

Radius = n
Volume 8.8480931009884E+24
Surface area 2.0687939951053E+17
Circumference 806182858.71219

Square

Length = n
Perimeter 513231948
Area 16462939527992169
Diagonal 181454895.37619

Cube

Length = n
Surface area 98777637167953014
Volume 2.1123266309394E+24
Space diagonal 222235952.50089

Equilateral Triangle

Length = n
Perimeter 384923961
Area 7.1286619261041E+15
Altitude 111117976.25044

Triangular Pyramid

Length = n
Surface area 7.1286619261041E+15
Volume 2.4894008080303E+23
Height 60484965.125397