28131831 (number)

28131831 is an odd 8-digits composite number following 28131830 and preceding 28131832. In scientific notation, it is written as 2.8131831 × 10^7. The sum of its digits is 27. It has a total of 7 prime factors and 48 positive divisors. There are 14817600 positive integers (up to 28131831) that are relatively prime to 28131831.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8131831 × 10^7
Engineering notation 2.8131831 × 10^6

Prime Factorization of 28131831

Prime Factorization 3 × 3 × 7 × 13 × 7 × 7 × 701

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 191373
Product of the distinct prime numbers

The prime factorization of 28131831 is 3 × 3 × 7 × 13 × 7 × 7 × 701. Since it has a total of 7 prime factors.

Most popular turbo-numbers

Basic calculations (n = 28131831)

Multiplication

n×y
n×2 56263662
n×3 84395493
n×4 112527324
n×5 140659155

Division

n÷y
n÷2 14065915.5
n÷3 9377277
n÷3 7032957.75
n÷5 5626366.2

Exponentiation

ny
n2 791399915412561
n3 2.22635286738E+22
n4 6.2631382611501E+29
n5 1.7619354709231E+37

Nth Root

y√n
2√n 5303.9448526545
3√n 304.13471853932
4√n 72.828187212469
5√n 30.89154289732

Divisors of 28131831

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28131830
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28131831 can be divided by 48 positive divisors. The sum of these divisors (counting 28131831) is 1, the average is 0.020833333333333.

Base conversion 28131831

Base System Value
2 Binary 1101011010100000111110111
3 Ternary 1221221020121200
4 Quaternary 1223110013313
5 Quinary 24200204311
6 Senary 2442543543
8 Octal 153240767
10 Decimal 28131831
12 Duodecimal 9507bb3
16 Hexadecimal 1ad41f7
20 Vigesimal 8fg9bb
36 Base36 gqynr

Cryptographic Hash Functions

md5 f55a04d953857bd2d08dabd67d9119c7
sha1 cd3e01355ced54ee04ec2c206825fdb7d166da23
sha256 e52529b86674d3cca2e56cc0c0cfab09029571aac01277e21db2887e114d0932
sha512 d806dd271a42b4ce92f4db0f10584af887aed8b7cdb70981bd054afaada1eafed280be1a33654d6ce409a1a95b54605568a481b0a6d833a16afac83c556d4496
ripemd-160 e7645c2b0ec2c54322e48d6c5af4a0b38aa229e7

28131831 as geometric shapes

Circle

Radius = n
Diameter 56263662
Circumference 176757507.20326
Area 2.4862561603117E+15

Sphere

Radius = n
Volume 9.3257250832796E+22
Surface area 9.9450246412467E+15
Circumference 176757507.20326

Square

Length = n
Perimeter 112527324
Area 791399915412561
Diagonal 39784416.934588

Cube

Length = n
Surface area 4748399492475366
Volume 2.22635286738E+22
Space diagonal 48725760.601941

Equilateral Triangle

Length = n
Perimeter 84395493
Area 3.4268621565007E+14
Altitude 24362880.300971

Triangular Pyramid

Length = n
Surface area 3.4268621565007E+14
Volume 2.6237820163976E+21
Height 13261472.311529