28931820 (number)

28931820 is an even 8-digits composite number following 28931819 and preceding 28931821. In scientific notation, it is written as 2.8931820 × 10^7. The sum of its digits is 33. It has a total of 5 prime factors and 24 positive divisors. There are 7688896 positive integers (up to 28931820) that are relatively prime to 28931820.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8931820 × 10^7
Engineering notation 2.8931820 × 10^6

Prime Factorization of 28931820

Prime Factorization 2 × 2 × 15 × 383 × 1259

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 14465910
Product of the distinct prime numbers

The prime factorization of 28931820 is 2 × 2 × 15 × 383 × 1259. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 4, 78, 64, 99, 481, 2353, 8651, 35700, 52670, 973697, 34952, 1418685, 8477715, 13999833, 70123767, 512311305, 359752194, 1163552267, 7415132741

Basic calculations (n = 28931820)

Multiplication

n×y
n×2 57863640
n×3 86795460
n×4 115727280
n×5 144659100

Division

n÷y
n÷2 14465910
n÷3 9643940
n÷3 7232955
n÷5 5786364

Exponentiation

ny
n2 837050208512400
n3 2.4217385963643E+22
n4 7.0065305157065E+29
n5 2.0271167970493E+37

Nth Root

y√n
2√n 5378.8307279557
3√n 306.99072287499
4√n 73.34051218771
5√n 31.065271309654

Divisors of 28931820

1, 2, 4, 15, 30, 60, 383, 766, 1259, 1532, 2518, 5036, 5745, 11490, 18885, 22980, 37770, 75540, 482197, 964394, 1928788, 7232955, 14465910, 28931820

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28931819
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28931820 can be divided by 24 positive divisors. The sum of these divisors (counting 28931820) is 1, the average is 0.041666666666667.

Base conversion 28931820

Base System Value
2 Binary 1101110010111011011101100
3 Ternary 2000102212222220
4 Quaternary 1232113123230
5 Quinary 24401304240
6 Senary 2512035340
8 Octal 156273354
10 Decimal 28931820
12 Duodecimal 9832b50
16 Hexadecimal 1b976ec
20 Vigesimal 90g9b0
36 Base36 h83xo

Cryptographic Hash Functions

md5 208d2a685bbde0329f91b505a1f847f0
sha1 aae6648a10131e7ed088c4a97262b1ac35f1d0b9
sha256 885dad7ba964ca7f0a59e723fe7468d4b7efecaa5371036efdb2b93c66517b75
sha512 da8b15d3e5934d699bd39b9cb332210270996fa84d7cced804171d741bff01c469d3ffbc879cd46d6cea5080d7ad666a5cac0b5f951f684bd7394a90b27be04b
ripemd-160 b4133f1ae34956abf5735d5130a802a0fed4524e

28931820 as geometric shapes

Circle

Radius = n
Diameter 57863640
Circumference 181783986.33396
Area 2.6296707857484E+15

Sphere

Radius = n
Volume 1.0144154911004E+23
Surface area 1.0518683142993E+16
Circumference 181783986.33396

Square

Length = n
Perimeter 115727280
Area 837050208512400
Diagonal 40915772.228137

Cube

Length = n
Surface area 5022301251074400
Volume 2.4217385963643E+22
Space diagonal 50111382.195437

Equilateral Triangle

Length = n
Perimeter 86795460
Area 3.624533724074E+14
Altitude 25055691.097719

Triangular Pyramid

Length = n
Surface area 3.624533724074E+14
Volume 2.8540463062507E+21
Height 13638590.742712