128840761 (number)

128840761 is an odd 9-digits composite number following 128840760 and preceding 128840762. In scientific notation, it is written as 1.28840761 × 10^8. The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors. There are 109193568 positive integers (up to 128840761) that are relatively prime to 128840761.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million eight hundred forty thousand seven hundred sixty-one

Notation

Scientific notation 1.28840761 × 10^8
Engineering notation 1.28840761 × 10^6

Prime Factorization of 128840761

Prime Factorization 7 × 89 × 206807

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128840761
Product of the distinct prime numbers

The prime factorization of 128840761 is 7 × 89 × 206807. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 3, 89, 81, 820, 920, 6603, 8770, 20937, 13995, 427270, 103049, 7040882, 7554776, 94045740, 53371377, 388542644, 244571013, 2574823818, 4529986651

Basic calculations (n = 128840761)

Multiplication

n×y
n×2 257681522
n×3 386522283
n×4 515363044
n×5 644203805

Division

n÷y
n÷2 64420380.5
n÷3 42946920.333333
n÷3 32210190.25
n÷5 25768152.2

Exponentiation

ny
n2 16599941695059121
n3 2.138749120547E+24
n4 2.7555806427936E+32
n5 3.550311070144E+40

Nth Root

y√n
2√n 11350.804420833
3√n 505.06944246505
4√n 106.54015403045
5√n 41.880384116318

Divisors of 128840761

1, 7, 89, 623, 206807, 1447649, 18405823, 128840761

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 -128840760
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 128840761 can be divided by 8 positive divisors. The sum of these divisors (counting 128840761) is 1, the average is 0.125.

Base conversion 128840761

Base System Value
2 Binary 111101011011111010000111001
3 Ternary 22222102210022001
4 Quaternary 13223133100321
5 Quinary 230440401021
6 Senary 20441301001
8 Octal 753372071
10 Decimal 128840761
12 Duodecimal 37194761
16 Hexadecimal 7adf439
20 Vigesimal 20551i1
36 Base36 24pi61

Cryptographic Hash Functions

md5 0ee61b082c583a90da997ca397c96f99
sha1 b11e3e4a54fde1df979ef4675d1ace3848166304
sha256 d77fd7ef6d5dafb5dcd7372ba1e5c8f5cc5b1d7c0c22c73fb300e7fae0d81a7b
sha512 73b2f649acd30d136679e4acf15d45cea208ecbbe7509a42c8e4c398087e1d2261898567b3cc5e01f1f2bc8e51d828444ef3910c899a678240ea8375f7193e92
ripemd-160 00b265a1180e22fee6e05b52432e4ca64629d248

128840761 as geometric shapes

Circle

Radius = n
Diameter 257681522
Circumference 809530376.48104
Area 5.2150254879217E+16

Sphere

Radius = n
Volume 8.958771366643E+24
Surface area 2.0860101951687E+17
Circumference 809530376.48104

Square

Length = n
Perimeter 515363044
Area 16599941695059121
Diagonal 182208351.59267

Cube

Length = n
Surface area 99599650170354726
Volume 2.138749120547E+24
Space diagonal 223158744.13784

Equilateral Triangle

Length = n
Perimeter 386522283
Area 7.1879856046309E+15
Altitude 111579372.06892

Triangular Pyramid

Length = n
Surface area 7.1879856046309E+15
Volume 2.5205400106593E+23
Height 60736117.197557