128668521 (number)

128668521 is an odd 9-digits composite number following 128668520 and preceding 128668522. In scientific notation, it is written as 1.28668521 × 10^8. The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors. There are 85779012 positive integers (up to 128668521) that are relatively prime to 128668521.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million six hundred sixty-eight thousand five hundred twenty-one

Notation

Scientific notation 1.28668521 × 10^8
Engineering notation 1.28668521 × 10^6

Prime Factorization of 128668521

Prime Factorization 3 × 42889507

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 128668521
Product of the distinct prime numbers

The prime factorization of 128668521 is 3 × 42889507. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 8, 6, 15, 892, 973, 7137, 5839, 7586, 58287, 522793, 391582, 353417, 9030416, 24781860, 90493280, 846660140, 553455829, 9745914443, 824798211

Basic calculations (n = 128668521)

Multiplication

n×y
n×2 257337042
n×3 386005563
n×4 514674084
n×5 643342605

Division

n÷y
n÷2 64334260.5
n÷3 42889507
n÷3 32167130.25
n÷5 25733704.2

Exponentiation

ny
n2 16555588296327441
n3 2.1301830603734E+24
n4 2.7408750383749E+32
n5 3.5266433743352E+40

Nth Root

y√n
2√n 11343.214755968
3√n 504.84427574416
4√n 106.50452927443
5√n 41.869180615626

Divisors of 128668521

1, 3, 42889507, 128668521

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 -128668520
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 128668521 can be divided by 4 positive divisors. The sum of these divisors (counting 128668521) is 1, the average is 0.25.

Base conversion 128668521

Base System Value
2 Binary 111101010110101001101101001
3 Ternary 22222010001000210
4 Quaternary 13222311031221
5 Quinary 230414343041
6 Senary 20433451333
8 Octal 752651551
10 Decimal 128668521
12 Duodecimal 37110b49
16 Hexadecimal 7ab5369
20 Vigesimal 2043b61
36 Base36 24lt9l

Cryptographic Hash Functions

md5 f5bafdce79a4712db2093078366f0621
sha1 e278ff6048dd392c58050ac3033e5a94085faecb
sha256 21cdfcaf1600e6ddc3154168e748ba83d5a58969be161df79e7d77ff6ffc2045
sha512 d3213f2d4d4ff9cac33de2e83347b34757b596895d18b2fd564eaf957ecb7254456674fc9b60420b6e55aaeefdb77582498b9ef8bd62dd0f422112313616f63c
ripemd-160 c902a6dff8539ce330130f2f0a57780c091025a6

128668521 as geometric shapes

Circle

Radius = n
Diameter 257337042
Circumference 808448160.64373
Area 5.2010914567599E+16

Sphere

Radius = n
Volume 8.9228899376938E+24
Surface area 2.080436582704E+17
Circumference 808448160.64373

Square

Length = n
Perimeter 514674084
Area 16555588296327441
Diagonal 181964767.44869

Cube

Length = n
Surface area 99333529777964646
Volume 2.1301830603734E+24
Space diagonal 222860415.70674

Equilateral Triangle

Length = n
Perimeter 386005563
Area 7.1687800196079E+15
Altitude 111430207.85337

Triangular Pyramid

Length = n
Surface area 7.1687800196079E+15
Volume 2.5104448119312E+23
Height 60654922.482896