Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

28686721 (number)

28686721 is an odd 8-digits composite number following 28686720 and preceding 28686722. In scientific notation, it is written as 2.8686721 × 10^7. The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors. There are 24588612 positive integers (up to 28686721) that are relatively prime to 28686721.

Interesting facts

28686721 has 4 divisors, whose sum is 32784832
The reverse of 28686721 is 12768682
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4

Name

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

Notation

Scientific notation	2.8686721 × 10^7
Engineering notation	2.8686721 × 10^6

Prime Factorization of 28686721

Prime Factorization 7 × 4098103

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	28686721	Product of the distinct prime numbers

The prime factorization of 28686721 is 7 × 4098103. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 9, 19, 99, 328, 630, 8461, 1419, 9485, 98481, 815190, 163342, 3664198, 3633974, 47660755, 39332732, 354524082, 440551989, 4076211459, 78940619

Basic calculations (n = 28686721)

Multiplication

n×y

n×2	57373442
n×3	86060163
n×4	114746884
n×5	143433605

Division

n÷y

n÷2	14343360.5
n÷3	9562240.3333333
n÷3	7171680.25
n÷5	5737344.2

Exponentiation

n^y

n²	822927961731841
n³	2.36071048413E+22
n⁴	6.7721043020012E+29
n⁵	1.9426946669441E+37

Nth Root

^y√n

²√n	5355.9985997011
³√n	306.12136171735
⁴√n	73.184688287244
⁵√n	31.012457485878

Divisors of 28686721

1, 7, 4098103, 28686721

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	-28686720	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 28686721 can be divided by 4 positive divisors. The sum of these divisors (counting 28686721) is 1, the average is 0.25.

Base conversion 28686721

Base	System	Value
2	Binary	1101101011011100110000001
3	Ternary	1222222102210011
4	Quaternary	1231123212001
5	Quinary	24320433341
6	Senary	2502504521
8	Octal	155334601
10	Decimal	28686721
12	Duodecimal	9735141
16	Hexadecimal	1b5b981
20	Vigesimal	8j5gg1
36	Base36	h2utd

Cryptographic Hash Functions

md5	8bb9381cd50df31cf815045be7b26377
sha1	b77e6997dfd48b610dc8bccfa84302375adff701
sha256	8d4f88753237fbd784c9ec40d5992e1eb6877aada8ef067f79be8b13b4279a6a
sha512	00dd11f47c8d3127b018aa75def8a9cb6b844075a24227c4493a9e57228d9724f693b3fb18917bef50ce195cc23aa0353f6c1c48a4debcfa6b46777a71415af2
ripemd-160	bda0d7e26dacf8ee91f1def2624d4d5d8ac0e78a

28686721 as geometric shapes

Circle

Radius = n

Diameter	57373442
Circumference	180243983.89836
Area	2.5853044390104E+15

Sphere

Radius = n

Volume	9.8885209522603E+22
Surface area	1.0341217756041E+16
Circumference	180243983.89836

Square

Length = n

Perimeter	114746884
Area	822927961731841
Diagonal	40569149.898213

Cube

Length = n

Surface area	4937567770391046
Volume	2.36071048413E+22
Space diagonal	49686858.274553

Equilateral Triangle

Length = n

Perimeter	86060163
Area	3.5633826017216E+14
Altitude	24843429.137277

Triangular Pyramid

Length = n

Surface area	3.5633826017216E+14
Volume	2.7821239862442E+21
Height	13523049.966071