128597987 (number)

128597987 is an odd 9-digits composite number following 128597986 and preceding 128597988. In scientific notation, it is written as 1.28597987 × 10^8. The sum of its digits is 56. It has a total of 3 prime factors and 8 positive divisors. There are 110162304 positive integers (up to 128597987) that are relatively prime to 128597987.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.28597987 × 10^8
Engineering notation 1.28597987 × 10^6

Prime Factorization of 128597987

Prime Factorization 7 × 2129 × 8629

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128597987
Product of the distinct prime numbers

The prime factorization of 128597987 is 7 × 2129 × 8629. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 7, 14, 34, 202, 474, 8211, 2680, 58454, 12099, 890189, 161117, 1353702, 3044669, 52905897, 13707118, 269025387, 724561127, 2906261100, 4070095341

Basic calculations (n = 128597987)

Multiplication

n×y
n×2 257195974
n×3 385793961
n×4 514391948
n×5 642989935

Division

n÷y
n÷2 64298993.5
n÷3 42865995.666667
n÷3 32149496.75
n÷5 25719597.4

Exponentiation

ny
n2 16537442260452169
n3 2.1266817848229E+24
n4 2.7348699651779E+32
n5 3.5169877222864E+40

Nth Root

y√n
2√n 11340.105246425
3√n 504.75200972977
4√n 106.48993025834
5√n 41.864589207356

Divisors of 128597987

1, 7, 2129, 8629, 14903, 60403, 18371141, 128597987

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 -128597986
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 128597987 can be divided by 8 positive divisors. The sum of these divisors (counting 128597987) is 1, the average is 0.125.

Base conversion 128597987

Base System Value
2 Binary 111101010100011111111100011
3 Ternary 22221222110021102
4 Quaternary 13222203333203
5 Quinary 230410113422
6 Senary 20432145015
8 Octal 752437743
10 Decimal 128597987
12 Duodecimal 3709816b
16 Hexadecimal 7aa3fe3
20 Vigesimal 203eej7
36 Base36 24kaub

Cryptographic Hash Functions

md5 6831e6a72f1f2d97069ede0ae693362f
sha1 649ee672782345d30598c90ffc3bf47e7884c016
sha256 6fe15eedda53788e9f3002cdc14fa924598133d763b4e27710fda86dd34c5a39
sha512 e2162aa00f461edef3135f882dd4bd4e2d621c4617cd2e1f9d69c8831e3d746c0ccbf76e6f79e42bb052abdc705a6e4702df45f6cd14841b3e4c56d80fa9e050
ripemd-160 5645f6d06cd2aa53650466ffcb5b719b784df608

128597987 as geometric shapes

Circle

Radius = n
Diameter 257195974
Circumference 808004982.45127
Area 5.1953907114602E+16

Sphere

Radius = n
Volume 8.9082238289637E+24
Surface area 2.0781562845841E+17
Circumference 808004982.45127

Square

Length = n
Perimeter 514391948
Area 16537442260452169
Diagonal 181865017.30928

Cube

Length = n
Surface area 99224653562713014
Volume 2.1266817848229E+24
Space diagonal 222738247.23508

Equilateral Triangle

Length = n
Perimeter 385793961
Area 7.160922555585E+15
Altitude 111369123.61754

Triangular Pyramid

Length = n
Surface area 7.160922555585E+15
Volume 2.5063185191236E+23
Height 60621672.436426