28786988 (number)

28786988 is an even 8-digits composite number following 28786987 and preceding 28786989. In scientific notation, it is written as 2.8786988 × 10^7. The sum of its digits is 56. It has a total of 5 prime factors and 24 positive divisors. There are 14144000 positive integers (up to 28786988) that are relatively prime to 28786988.

Interesting facts

Basic properties

Name

Name twenty-eight million seven hundred eighty-six thousand nine hundred eighty-eight

Notation

Scientific notation 2.8786988 × 10^7
Engineering notation 2.8786988 × 10^6

Prime Factorization of 28786988

Prime Factorization 2 × 2 × 137 × 131 × 401

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 14393494
Product of the distinct prime numbers

The prime factorization of 28786988 is 2 × 2 × 137 × 131 × 401. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 6, 84, 7, 300, 950, 6122, 3698, 37131, 79525, 800677, 327173, 8113861, 1488080, 48779236, 92236329, 890679937, 221829340, 5227737363, 2381933207

Basic calculations (n = 28786988)

Multiplication

n×y
n×2 57573976
n×3 86360964
n×4 115147952
n×5 143934940

Division

n÷y
n÷2 14393494
n÷3 9595662.6666667
n÷3 7196747
n÷5 5757397.6

Exponentiation

ny
n2 828690678112144
n3 2.3855508606526E+22
n4 6.8672823998997E+29
n5 1.9768837603852E+37

Nth Root

y√n
2√n 5365.3506875134
3√n 306.47760295559
4√n 73.248554166709
5√n 31.034106441522

Divisors of 28786988

1, 2, 4, 131, 137, 262, 274, 401, 524, 548, 802, 1604, 17947, 35894, 52531, 54937, 71788, 105062, 109874, 210124, 219748, 7196747, 14393494, 28786988

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 -28786987
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 28786988 can be divided by 24 positive divisors. The sum of these divisors (counting 28786988) is 1, the average is 0.041666666666667.

Base conversion 28786988

Base System Value
2 Binary 1101101110100000100101100
3 Ternary 2000011112022202
4 Quaternary 1231310010230
5 Quinary 24332140423
6 Senary 2505001032
8 Octal 155640454
10 Decimal 28786988
12 Duodecimal 9783178
16 Hexadecimal 1b7412c
20 Vigesimal 8ji798
36 Base36 h506k

Cryptographic Hash Functions

md5 ad83af9bd20c8b318142ef8faa7a8881
sha1 5fdd05d860db6464aace09950f19db94b2d51e6e
sha256 baae27d14076a2d33797d8f8865c4914afe36f2e07d030cfe1671730037d9a6f
sha512 b77908b92e3cbb19b0fe8a4867c7d0119459de12354337e9d192ffa7eaef75a6affb105d69ae7723dc13bae6f64d22670f511ef83da02e93003504b53bc03d88
ripemd-160 b2d5b9ac2534a5ce741e0c169bfb1b6f5d138089

28786988 as geometric shapes

Circle

Radius = n
Diameter 57573976
Circumference 180873980.03956
Area 2.6034085464555E+15

Sphere

Radius = n
Volume 9.9925720781214E+22
Surface area 1.0413634185822E+16
Circumference 180873980.03956

Square

Length = n
Perimeter 115147952
Area 828690678112144
Diagonal 40710948.849472

Cube

Length = n
Surface area 4972144068672864
Volume 2.3855508606526E+22
Space diagonal 49860525.812876

Equilateral Triangle

Length = n
Perimeter 86360964
Area 3.5883358956223E+14
Altitude 24930262.906438

Triangular Pyramid

Length = n
Surface area 3.5883358956223E+14
Volume 2.8113986507214E+21
Height 13570316.283157