28931209 (number)

28931209 is an odd 8-digits composite number following 28931208 and preceding 28931210. In scientific notation, it is written as 2.8931209 × 10^7. The sum of its digits is 34. It has a total of 2 prime factors and 4 positive divisors. There are 28871316 positive integers (up to 28931209) that are relatively prime to 28931209.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred thirty-one thousand two hundred nine

Notation

Scientific notation 2.8931209 × 10^7
Engineering notation 2.8931209 × 10^6

Prime Factorization of 28931209

Prime Factorization 487 × 59407

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28931209
Product of the distinct prime numbers

The prime factorization of 28931209 is 487 × 59407. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 10, 5, 6, 895, 362, 4689, 2826, 34385, 88993, 456075, 599205, 4370743, 1325696, 68413070, 76453853, 118879532, 57544726, 5744000741, 6673538258

Basic calculations (n = 28931209)

Multiplication

n×y
n×2 57862418
n×3 86793627
n×4 115724836
n×5 144656045

Division

n÷y
n÷2 14465604.5
n÷3 9643736.3333333
n÷3 7232802.25
n÷5 5786241.8

Exponentiation

ny
n2 837014854201681
n3 2.4215851683013E+22
n4 7.0059386615426E+29
n5 2.0269027565827E+37

Nth Root

y√n
2√n 5378.7739309252
3√n 306.9885617867
4√n 73.340124972113
5√n 31.065140097437

Divisors of 28931209

1, 487, 59407, 28931209

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 -28931208
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 28931209 can be divided by 4 positive divisors. The sum of these divisors (counting 28931209) is 1, the average is 0.25.

Base conversion 28931209

Base System Value
2 Binary 1101110010111010010001001
3 Ternary 2000102212011021
4 Quaternary 1232113102021
5 Quinary 24401244314
6 Senary 2512032441
8 Octal 156272211
10 Decimal 28931209
12 Duodecimal 9832721
16 Hexadecimal 1b97489
20 Vigesimal 90g809
36 Base36 h83gp

Cryptographic Hash Functions

md5 024d7478e71746446f9ba6cc4ce9089f
sha1 b0b619cae582b43ce3f6ecae6ac403a522cf00e4
sha256 92a6393e2161fc2eb6d8cc174f41d4935b55d864029f0fbeea6605823f5ad89d
sha512 35443f9fad5896b2f0a4b7deaf8ca010ae5b7053e06b1c32080e103bac0afe03497dd61b183aa731f7fecca8faa3e43ed97371ecb1ab9569034a2b5ef0748249
ripemd-160 594c3abd368d2dfdcfcdf9276c182df7cabaa882

28931209 as geometric shapes

Circle

Radius = n
Diameter 57862418
Circumference 181780147.30774
Area 2.6295597169055E+15

Sphere

Radius = n
Volume 1.0143512233037E+23
Surface area 1.0518238867622E+16
Circumference 181780147.30774

Square

Length = n
Perimeter 115724836
Area 837014854201681
Diagonal 40914908.143651

Cube

Length = n
Surface area 5022089125210086
Volume 2.4215851683013E+22
Space diagonal 50110323.912394

Equilateral Triangle

Length = n
Perimeter 86793627
Area 3.6243806354179E+14
Altitude 25055161.956197

Triangular Pyramid

Length = n
Surface area 3.6243806354179E+14
Volume 2.8538654895444E+21
Height 13638302.71455