128528991 (number)

128528991 is an odd 9-digits composite number following 128528990 and preceding 128528992. In scientific notation, it is written as 1.28528991 × 10^8. The sum of its digits is 45. It has a total of 5 prime factors and 32 positive divisors. There are 81316224 positive integers (up to 128528991) that are relatively prime to 128528991.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.28528991 × 10^8
Engineering notation 1.28528991 × 10^6

Prime Factorization of 128528991

Prime Factorization 9 × 23 × 3 × 139 × 1489

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 128528991
Product of the distinct prime numbers

The prime factorization of 128528991 is 9 × 23 × 3 × 139 × 1489. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 7, 15, 19, 666, 310, 6483, 3699, 43301, 38319, 807708, 332520, 6164179, 9082317, 17099652, 47462338, 25516775, 314843769, 6896775973, 27665620

Basic calculations (n = 128528991)

Multiplication

n×y
n×2 257057982
n×3 385586973
n×4 514115964
n×5 642644955

Division

n÷y
n÷2 64264495.5
n÷3 42842997
n÷3 32132247.75
n÷5 25705798.2

Exponentiation

ny
n2 16519701527478081
n3 2.1232605689479E+24
n4 2.7290053855696E+32
n5 3.5075630864083E+40

Nth Root

y√n
2√n 11337.062714831
3√n 504.6617229359
4√n 106.4756437634
5√n 41.86009596549

Divisors of 128528991

1, 3, 9, 23, 27, 69, 139, 207, 417, 621, 1251, 1489, 3197, 3753, 4467, 9591, 13401, 28773, 34247, 40203, 86319, 102741, 206971, 308223, 620913, 924669, 1862739, 4760333, 5588217, 14280999, 42842997, 128528991

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128528990
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128528991 can be divided by 32 positive divisors. The sum of these divisors (counting 128528991) is 1, the average is 0.03125.

Base conversion 128528991

Base System Value
2 Binary 111101010010011001001011111
3 Ternary 22221211221122000
4 Quaternary 13222103021133
5 Quinary 230400411431
6 Senary 20430453343
8 Octal 752231137
10 Decimal 128528991
12 Duodecimal 37064253
16 Hexadecimal 7a9325f
20 Vigesimal 203629b
36 Base36 24itlr

Cryptographic Hash Functions

md5 09dbdc2f77eedb4632b4d8cb364278e3
sha1 6caf1afefd381eeb3daed099fb3d9625356e45b4
sha256 4241e5cedeeb12c74a097dcccd04774e75ab8133c0c0bd555f5376ba5ba0480d
sha512 6dd1cb0f963f8f4cd3261e9900bb4d3ecd121374d194bf6c06996c68212c811a2226cc2317e22f3a372a3f73f4d6ba2564c5b1dc34b8e805335367025ffb9a0c
ripemd-160 0cccb9c9a0cb86bbacdd38d785ca6ad845c6b357

128528991 as geometric shapes

Circle

Radius = n
Diameter 257057982
Circumference 807571467.79782
Area 5.1898172958221E+16

Sphere

Radius = n
Volume 8.8938930734182E+24
Surface area 2.0759269183288E+17
Circumference 807571467.79782

Square

Length = n
Perimeter 514115964
Area 16519701527478081
Diagonal 181767442.23033

Cube

Length = n
Surface area 99118209164868486
Volume 2.1232605689479E+24
Space diagonal 222618742.65756

Equilateral Triangle

Length = n
Perimeter 385586973
Area 7.1532405928663E+15
Altitude 111309371.32878

Triangular Pyramid

Length = n
Surface area 7.1532405928663E+15
Volume 2.5022865775485E+23
Height 60589147.41011