128246987 (number)

128246987 is an odd 9-digits composite number following 128246986 and preceding 128246988. In scientific notation, it is written as 1.28246987 × 10^8. The sum of its digits is 47. It has a total of 2 prime factors and 4 positive divisors. There are 116588160 positive integers (up to 128246987) that are relatively prime to 128246987.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.28246987 × 10^8
Engineering notation 1.28246987 × 10^6

Prime Factorization of 128246987

Prime Factorization 11 × 11658817

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128246987
Product of the distinct prime numbers

The prime factorization of 128246987 is 11 × 11658817. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128246987)

Multiplication

n×y
n×2 256493974
n×3 384740961
n×4 512987948
n×5 641234935

Division

n÷y
n÷2 64123493.5
n÷3 42748995.666667
n÷3 32061746.75
n÷5 25649397.4

Exponentiation

ny
n2 16447289674578169
n3 2.1093153450809E+24
n4 2.7051333763949E+32
n5 3.4692520495578E+40

Nth Root

y√n
2√n 11324.618624925
3√n 504.29236181469
4√n 106.41719139747
5√n 41.841710870725

Divisors of 128246987

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 -128246986
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 128246987 can be divided by 4 positive divisors. The sum of these divisors (counting 128246987) is 1, the average is 0.25.

Base conversion 128246987

Base System Value
2 Binary 111101001001110010011001011
3 Ternary 22221022121210102
4 Quaternary 13221032103023
5 Quinary 230312400422
6 Senary 20420440015
8 Octal 751162313
10 Decimal 128246987
12 Duodecimal 36b4900b
16 Hexadecimal 7a4e4cb
20 Vigesimal 201ah97
36 Base36 24cs0b

Cryptographic Hash Functions

md5 24e0aa836f78eed532d4cf8a4d4ea72d
sha1 6be3dd726c08d66962b486b91329038bec42cc55
sha256 5fc2baab055ec4c0efbc668c3c76fb9c44974d6e2ae0589b3c5ce3d61486267a
sha512 ffde6769900bfcb79f55aa8739dd37c8b4a28a5437f35f5f17ccd39af1cc1f06157325140e3ba9bc727e4211811c138c8b7b465cf4794b3a675d872a29d9ef37
ripemd-160 8821c1e3d238a5603f1297e3c1c1f15ed52b3006

128246987 as geometric shapes

Circle

Radius = n
Diameter 256493974
Circumference 805799584.40845
Area 5.1670684413118E+16

Sphere

Radius = n
Volume 8.8354794562803E+24
Surface area 2.0668273765247E+17
Circumference 805799584.40845

Square

Length = n
Perimeter 512987948
Area 16447289674578169
Diagonal 181368628.34889

Cube

Length = n
Surface area 98683738047469014
Volume 2.1093153450809E+24
Space diagonal 222130297.40163

Equilateral Triangle

Length = n
Perimeter 384740961
Area 7.1218853407931E+15
Altitude 111065148.70081

Triangular Pyramid

Length = n
Surface area 7.1218853407931E+15
Volume 2.4858519736125E+23
Height 60456209.449629