128890987 (number)

128890987 is an odd 9-digits composite number following 128890986 and preceding 128890988. In scientific notation, it is written as 1.28890987 × 10^8. The sum of its digits is 52. It has a total of 4 prime factors and 12 positive divisors. There are 124423920 positive integers (up to 128890987) that are relatively prime to 128890987.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.28890987 × 10^8
Engineering notation 1.28890987 × 10^6

Prime Factorization of 128890987

Prime Factorization 59 × 59 × 61 × 607

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 2184593
Product of the distinct prime numbers

The prime factorization of 128890987 is 59 × 59 × 61 × 607. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 7, 8, 15, 717, 1, 6989, 5785, 50009, 58855, 138256, 726651, 6035227, 491775, 13902185, 60277270, 968536570, 656508867, 387995984, 8259476730

Basic calculations (n = 128890987)

Multiplication

n×y
n×2 257781974
n×3 386672961
n×4 515563948
n×5 644454935

Division

n÷y
n÷2 64445493.5
n÷3 42963662.333333
n÷3 32222746.75
n÷5 25778197.4

Exponentiation

ny
n2 16612886529834169
n3 2.1412513417493E+24
n4 2.7598799885315E+32
n5 3.5572365572337E+40

Nth Root

y√n
2√n 11353.01664757
3√n 505.1350643536
4√n 106.55053565126
5√n 41.883648853707

Divisors of 128890987

1, 59, 61, 607, 3481, 3599, 35813, 37027, 212341, 2112967, 2184593, 128890987

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 -128890986
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 128890987 can be divided by 12 positive divisors. The sum of these divisors (counting 128890987) is 1, the average is 0.083333333333333.

Base conversion 128890987

Base System Value
2 Binary 111101011101011100001101011
3 Ternary 22222112100012021
4 Quaternary 13223223201223
5 Quinary 230444002422
6 Senary 20442325311
8 Octal 753534153
10 Decimal 128890987
12 Duodecimal 371b9837
16 Hexadecimal 7aeb86b
20 Vigesimal 205b797
36 Base36 24qkx7

Cryptographic Hash Functions

md5 0c05cd73605fae749cd184637b2345d7
sha1 513e1beafae465e6a36a7c30f6975b52d27a9f9d
sha256 a5a95a057e030a1854ffddafb9fb68e27957e457651fbf90cbbab0c12e179af5
sha512 8df9c8d058e22109021e3da445735e62d587536dd74877cc44457775063f41e272dfeba0f0c434f7498d7378468f971bb71ce74a8f53f199f0df6522bddb1285
ripemd-160 f7254fef59292154948c566c69e8c51c521599c8

128890987 as geometric shapes

Circle

Radius = n
Diameter 257781974
Circumference 809845955.74628
Area 5.2190922277048E+16

Sphere

Radius = n
Volume 8.9692526463053E+24
Surface area 2.0876368910819E+17
Circumference 809845955.74628

Square

Length = n
Perimeter 515563948
Area 16612886529834169
Diagonal 182279381.88305

Cube

Length = n
Surface area 99677319179005014
Volume 2.1412513417493E+24
Space diagonal 223245738.1217

Equilateral Triangle

Length = n
Perimeter 386672961
Area 7.1935908825123E+15
Altitude 111622869.06085

Triangular Pyramid

Length = n
Surface area 7.1935908825123E+15
Volume 2.5234889066262E+23
Height 60759793.961018