28786989 (number)

28786989 is an odd 8-digits composite number following 28786988 and preceding 28786990. In scientific notation, it is written as 2.8786989 × 10^7. The sum of its digits is 57. It has a total of 5 prime factors and 24 positive divisors. There are 14952960 positive integers (up to 28786989) that are relatively prime to 28786989.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8786989 × 10^7
Engineering notation 2.8786989 × 10^6

Prime Factorization of 28786989

Prime Factorization 3 × 7 × 11 × 11 × 11329

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 2616999
Product of the distinct prime numbers

The prime factorization of 28786989 is 3 × 7 × 11 × 11 × 11329. Since it has a total of 5 prime factors.

Most popular turbo-numbers

5, 7, 9, 86, 799, 344, 5809, 3625, 32674, 75895, 120986, 255995, 7504807, 4622259, 37423416, 56401140, 725741024, 942878578, 4267842124, 9816612009

Basic calculations (n = 28786989)

Multiplication

n×y
n×2 57573978
n×3 86360967
n×4 115147956
n×5 143934945

Division

n÷y
n÷2 14393494.5
n÷3 9595663
n÷3 7196747.25
n÷5 5757397.8

Exponentiation

ny
n2 828690735686121
n3 2.3855511092598E+22
n4 6.86728335412E+29
n5 1.9768841037494E+37

Nth Root

y√n
2√n 5365.3507807039
3√n 306.47760650439
4√n 73.248554802835
5√n 31.034106657134

Divisors of 28786989

1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 11329, 33987, 79303, 124619, 237909, 373857, 872333, 1370809, 2616999, 4112427, 9595663, 28786989

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 -28786988
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 28786989 can be divided by 24 positive divisors. The sum of these divisors (counting 28786989) is 1, the average is 0.041666666666667.

Base conversion 28786989

Base System Value
2 Binary 1101101110100000100101101
3 Ternary 2000011112022210
4 Quaternary 1231310010231
5 Quinary 24332140424
6 Senary 2505001033
8 Octal 155640455
10 Decimal 28786989
12 Duodecimal 9783179
16 Hexadecimal 1b7412d
20 Vigesimal 8ji799
36 Base36 h506l

Cryptographic Hash Functions

md5 8cae9a38c553faeb8bd25b5e2347b7ca
sha1 4ce57b37f074424405ef6cb5c5d430fd5dd55c9f
sha256 5b97d081480a26ec15dc8d7d91cf203cb85303b8ae1e3433a269d3af50b0abdc
sha512 e76f85811e586512efa24f3230be0bdbce06174c62c57e6604671b981600d6203382f5ddb77ef11a1db264958c565f3ea8b620f4d825ee12da13eb6cd969b1f5
ripemd-160 8f4176e92f0b50cea4e4cf6d25fdf0474b938001

28786989 as geometric shapes

Circle

Radius = n
Diameter 57573978
Circumference 180873986.32274
Area 2.6034087273294E+15

Sphere

Radius = n
Volume 9.9925731194849E+22
Surface area 1.0413634909318E+16
Circumference 180873986.32274

Square

Length = n
Perimeter 115147956
Area 828690735686121
Diagonal 40710950.263685

Cube

Length = n
Surface area 4972144414116726
Volume 2.3855511092598E+22
Space diagonal 49860527.544926

Equilateral Triangle

Length = n
Perimeter 86360967
Area 3.588336144925E+14
Altitude 24930263.772463

Triangular Pyramid

Length = n
Surface area 3.588336144925E+14
Volume 2.8113989437079E+21
Height 13570316.754562