28788891 (number)

28788891 is an odd 8-digits composite number following 28788890 and preceding 28788892. In scientific notation, it is written as 2.8788891 × 10^7. The sum of its digits is 51. It has a total of 2 prime factors and 4 positive divisors. There are 19192592 positive integers (up to 28788891) that are relatively prime to 28788891.

Interesting facts

Basic properties

Name

Name twenty-eight million seven hundred eighty-eight thousand eight hundred ninety-one

Notation

Scientific notation 2.8788891 × 10^7
Engineering notation 2.8788891 × 10^6

Prime Factorization of 28788891

Prime Factorization 3 × 9596297

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28788891
Product of the distinct prime numbers

The prime factorization of 28788891 is 3 × 9596297. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 1, 72, 98, 404, 559, 9564, 40, 16466, 72636, 743199, 239213, 3177210, 1988847, 58919733, 33859804, 586884655, 248756653, 4933255698, 4015984387

Basic calculations (n = 28788891)

Multiplication

n×y
n×2 57577782
n×3 86366673
n×4 115155564
n×5 143944455

Division

n÷y
n÷2 14394445.5
n÷3 9596297
n÷3 7197222.75
n÷5 5757778.2

Exponentiation

ny
n2 828800245009881
n3 2.3860239914363E+22
n4 6.8690984612844E+29
n5 1.9775372687018E+37

Nth Root

y√n
2√n 5365.5280262058
3√n 306.48435616908
4√n 73.249764683621
5√n 31.03451674039

Divisors of 28788891

1, 3, 9596297, 28788891

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28788890
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28788891 can be divided by 4 positive divisors. The sum of these divisors (counting 28788891) is 1, the average is 0.25.

Base conversion 28788891

Base System Value
2 Binary 1101101110100100010011011
3 Ternary 2000011121221020
4 Quaternary 1231310202123
5 Quinary 24332221031
6 Senary 2505013523
8 Octal 155644233
10 Decimal 28788891
12 Duodecimal 97842a3
16 Hexadecimal 1b7489b
20 Vigesimal 8jic4b
36 Base36 h51nf

Cryptographic Hash Functions

md5 f6f521fb3b827be0596289e9a58dde35
sha1 fc8230f483a92c1c05356dd3a23fe7a0af489fb9
sha256 7cbda61336e0808c55cbd81ba7ccfca6bee11760563276a4389fa60d15eaccf6
sha512 2068706710c8e95ece1c27d9401df9b3cb2d0b2c59408d391db717de40d4d43b7b4e262be240123c8b0e7d3829f750cde1a7ff65e219b02ec928b0570607cbce
ripemd-160 97f71183c58f2d0f75f046e34b2ea5c33ee1b394

28788891 as geometric shapes

Circle

Radius = n
Diameter 57577782
Circumference 180885936.94119
Area 2.6037527610165E+15

Sphere

Radius = n
Volume 9.9945539237136E+22
Surface area 1.0415011044066E+16
Circumference 180885936.94119

Square

Length = n
Perimeter 115155564
Area 828800245009881
Diagonal 40713640.097881

Cube

Length = n
Surface area 4972801470059286
Volume 2.3860239914363E+22
Space diagonal 49863821.905562

Equilateral Triangle

Length = n
Perimeter 86366673
Area 3.5888103342066E+14
Altitude 24931910.952781

Triangular Pyramid

Length = n
Surface area 3.5888103342066E+14
Volume 2.8119562406973E+21
Height 13571213.36596