28131285 (number)

28131285 is an odd 8-digits composite number following 28131284 and preceding 28131286. In scientific notation, it is written as 2.8131285 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 11529216 positive integers (up to 28131285) that are relatively prime to 28131285.

Interesting facts

Basic properties

Name

Name twenty-eight million one hundred thirty-one thousand two hundred eighty-five

Notation

Scientific notation 2.8131285 × 10^7
Engineering notation 2.8131285 × 10^6

Prime Factorization of 28131285

Prime Factorization 15 × 13 × 259 × 557

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 28131285
Product of the distinct prime numbers

The prime factorization of 28131285 is 15 × 13 × 259 × 557. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 5, 84, 28, 415, 714, 4302, 8235, 91325, 63206, 159457, 963414, 5539231, 9439653, 57913364, 30111479, 682524565, 537898458, 3903521708, 5205550594

Basic calculations (n = 28131285)

Multiplication

n×y
n×2 56262570
n×3 84393855
n×4 112525140
n×5 140656425

Division

n÷y
n÷2 14065642.5
n÷3 9377095
n÷3 7032821.25
n÷5 5626257

Exponentiation

ny
n2 791369195751225
n3 2.2262232385899E+22
n4 6.2626520398394E+29
n5 1.7617644938855E+37

Nth Root

y√n
2√n 5303.8933812813
3√n 304.13275091493
4√n 72.827833836256
5√n 30.891422983949

Divisors of 28131285

1, 13, 15, 195, 259, 557, 3367, 3885, 7241, 8355, 50505, 108615, 144263, 1875419, 2163945, 28131285

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28131284
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28131285 can be divided by 16 positive divisors. The sum of these divisors (counting 28131285) is 1, the average is 0.0625.

Base conversion 28131285

Base System Value
2 Binary 1101011010011111111010101
3 Ternary 1221221012212110
4 Quaternary 1223103333111
5 Quinary 24200200120
6 Senary 2442541233
8 Octal 153237725
10 Decimal 28131285
12 Duodecimal 9507819
16 Hexadecimal 1ad3fd5
20 Vigesimal 8fg845
36 Base36 gqy8l

Cryptographic Hash Functions

md5 41ed80e7c68a18486b5c7e9d12ef9e70
sha1 e6b441bdfc26d8ce4260934c92bb24d0323d46b5
sha256 cd3c42172a35008159db672add948ac78141bd814a379a9720c34edd3df3fe4d
sha512 51963568826aab5a37eb154254b1db010221026cf546f838b504d3167bfacb33222d2e71e90f6ca54a8d2bd093ad36842454d41d1bd857a880b9fcbdb1a55640
ripemd-160 f9ea8abf60a542d51efeba78f73630ad40b3b196

28131285 as geometric shapes

Circle

Radius = n
Diameter 56262570
Circumference 176754076.58408
Area 2.4861596516493E+15

Sphere

Radius = n
Volume 9.325182095473E+22
Surface area 9.9446386065972E+15
Circumference 176754076.58408

Square

Length = n
Perimeter 112525140
Area 791369195751225
Diagonal 39783644.773983

Cube

Length = n
Surface area 4748215174507350
Volume 2.2262232385899E+22
Space diagonal 48724814.9022

Equilateral Triangle

Length = n
Perimeter 84393855
Area 3.4267291364651E+14
Altitude 24362407.4511

Triangular Pyramid

Length = n
Surface area 3.4267291364651E+14
Volume 2.6236292474033E+21
Height 13261214.924661