28691391 (number)

28691391 is an odd 8-digits composite number following 28691390 and preceding 28691392. In scientific notation, it is written as 2.8691391 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors. There are 18255744 positive integers (up to 28691391) that are relatively prime to 28691391.

Interesting facts

Basic properties

Name

Name twenty-eight million six hundred ninety-one thousand three hundred ninety-one

Notation

Scientific notation 2.8691391 × 10^7
Engineering notation 2.8691391 × 10^6

Prime Factorization of 28691391

Prime Factorization 3 × 37 × 53 × 4877

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 28691391
Product of the distinct prime numbers

The prime factorization of 28691391 is 3 × 37 × 53 × 4877. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 8, 58, 19, 612, 920, 4013, 2762, 60067, 24303, 588963, 203885, 3561736, 9043542, 90898159, 71099108, 283100674, 574506734, 974449832, 2452956830

Basic calculations (n = 28691391)

Multiplication

n×y
n×2 57382782
n×3 86074173
n×4 114765564
n×5 143456955

Division

n÷y
n÷2 14345695.5
n÷3 9563797
n÷3 7172847.75
n÷5 5738278.2

Exponentiation

ny
n2 823195917514881
n3 2.3618635939023E+22
n4 6.7765151861317E+29
n5 1.9442764682274E+37

Nth Root

y√n
2√n 5356.4345417451
3√n 306.13797229698
4√n 73.187666595849
5√n 31.0134671429

Divisors of 28691391

1, 3, 37, 53, 111, 159, 1961, 4877, 5883, 14631, 180449, 258481, 541347, 775443, 9563797, 28691391

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 -28691390
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 28691391 can be divided by 16 positive divisors. The sum of these divisors (counting 28691391) is 1, the average is 0.0625.

Base conversion 28691391

Base System Value
2 Binary 1101101011100101110111111
3 Ternary 1222222200012010
4 Quaternary 1231130232333
5 Quinary 24321111031
6 Senary 2502542303
8 Octal 155345677
10 Decimal 28691391
12 Duodecimal 9737993
16 Hexadecimal 1b5cbbf
20 Vigesimal 8j689b
36 Base36 h2yf3

Cryptographic Hash Functions

md5 4a5c74e0ee2ff408a5d65ed1fb612b5c
sha1 ef8a14a20b050d163909b23f39a557354f12298a
sha256 3c928c59f017f98e2cfc4d5638364932471381e59040a05bdc2903e3588e98af
sha512 a9b32f694e5b8034169a107d334c2fe47b7815450499ce90d5b1233202622e386294f52ae2a20374aa5c443f3e6776c26fbff6ddd6b3da1716e05d6ff761580c
ripemd-160 32b2e3e6f1e55a05add83de712f9b3719f443b5f

28691391 as geometric shapes

Circle

Radius = n
Diameter 57382782
Circumference 180273326.37374
Area 2.5861462469299E+15

Sphere

Radius = n
Volume 9.8933510871796E+22
Surface area 1.0344584987719E+16
Circumference 180273326.37374

Square

Length = n
Perimeter 114765564
Area 823195917514881
Diagonal 40575754.275549

Cube

Length = n
Surface area 4939175505089286
Volume 2.3618635939023E+22
Space diagonal 49694946.951824

Equilateral Triangle

Length = n
Perimeter 86074173
Area 3.5645428842976E+14
Altitude 24847473.475912

Triangular Pyramid

Length = n
Surface area 3.5645428842976E+14
Volume 2.7834829391433E+21
Height 13525251.425183