128776991 (number)

128776991 is an odd 9-digits composite number following 128776990 and preceding 128776992. In scientific notation, it is written as 1.28776991 × 10^8. The sum of its digits is 50. It has a total of 2 prime factors and 4 positive divisors. There are 110380272 positive integers (up to 128776991) that are relatively prime to 128776991.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million seven hundred seventy-six thousand nine hundred ninety-one

Notation

Scientific notation 1.28776991 × 10^8
Engineering notation 1.28776991 × 10^6

Prime Factorization of 128776991

Prime Factorization 7 × 18396713

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128776991
Product of the distinct prime numbers

The prime factorization of 128776991 is 7 × 18396713. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 1, 38, 86, 536, 516, 1306, 893, 6431, 95168, 463929, 601637, 9212474, 5811713, 98918586, 66273678, 207191781, 393096584, 5756724541, 2485830818

Basic calculations (n = 128776991)

Multiplication

n×y
n×2 257553982
n×3 386330973
n×4 515107964
n×5 643884955

Division

n÷y
n÷2 64388495.5
n÷3 42925663.666667
n÷3 32194247.75
n÷5 25755398.2

Exponentiation

ny
n2 16583513411014081
n3 2.1355749572785E+24
n4 2.7501291705328E+32
n5 3.5415335944254E+40

Nth Root

y√n
2√n 11347.995021148
3√n 504.98610032651
4√n 106.52696851571
5√n 41.87623753882

Divisors of 128776991

1, 7, 18396713, 128776991

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 -128776990
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 128776991 can be divided by 4 positive divisors. The sum of these divisors (counting 128776991) is 1, the average is 0.25.

Base conversion 128776991

Base System Value
2 Binary 111101011001111101100011111
3 Ternary 22222022112211012
4 Quaternary 13223033230133
5 Quinary 230431330431
6 Senary 20440045435
8 Octal 753175437
10 Decimal 128776991
12 Duodecimal 3716387b
16 Hexadecimal 7acfb1f
20 Vigesimal 204h29b
36 Base36 24o4yn

Cryptographic Hash Functions

md5 1bb334f1043e8ce19a52901e8608683c
sha1 e80290d1645abf8a266518f9fd6f2d57b7a365e6
sha256 35f48e27ef533c271e5dd17bec9f1ee4476a8a48197a1341f071910827afcfb4
sha512 f8905f3e7820286de8a3b9550a5cd1436211b3d0748e1e51cd50f56c42eafc91e4a152ca160a260622e2d3ca6bcee4e7efd6f10d2a970b82889f24953ec8adcc
ripemd-160 b1e55869a22e03cd019e4a857ec9153fefeb6722

128776991 as geometric shapes

Circle

Radius = n
Diameter 257553982
Circumference 809129697.754
Area 5.209864390275E+16

Sphere

Radius = n
Volume 8.9454754626355E+24
Surface area 2.08394575611E+17
Circumference 809129697.754

Square

Length = n
Perimeter 515107964
Area 16583513411014081
Diagonal 182118167.1938

Cube

Length = n
Surface area 99501080466084486
Volume 2.1355749572785E+24
Space diagonal 223048291.25784

Equilateral Triangle

Length = n
Perimeter 386330973
Area 7.1808719489691E+15
Altitude 111524145.62892

Triangular Pyramid

Length = n
Surface area 7.1808719489691E+15
Volume 2.516799223373E+23
Height 60706055.731266