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

28438991 (number)

28438991 is an odd 8-digits composite number following 28438990 and preceding 28438992. In scientific notation, it is written as 2.8438991 × 10^7. The sum of its digits is 44. It has a total of 2 prime factors and 4 positive divisors. There are 23093208 positive integers (up to 28438991) that are relatively prime to 28438991.

Interesting facts

28438991 has 4 divisors, whose sum is 28652952
The reverse of 28438991 is 19983482
Previous prime number is 133

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 44
Digital Root 8

Name

Name	twenty-eight million four hundred thirty-eight thousand nine hundred ninety-one

Notation

Scientific notation	2.8438991 × 10^7
Engineering notation	2.8438991 × 10^6

Prime Factorization of 28438991

Prime Factorization 133 × 213827

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	28438991	Product of the distinct prime numbers

The prime factorization of 28438991 is 133 × 213827. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 8, 66, 91, 333, 742, 686, 1653, 5963, 65346, 322623, 248121, 2097277, 3598611, 77203427, 83883574, 133606930, 868939077, 8382074543, 5888737948

Basic calculations (n = 28438991)

Multiplication

n×y

n×2	56877982
n×3	85316973
n×4	113755964
n×5	142194955

Division

n÷y

n÷2	14219495.5
n÷3	9479663.6666667
n÷3	7109747.75
n÷5	5687798.2

Exponentiation

n^y

n²	808776209098081
n³	2.3000779331554E+22
n⁴	6.5411895640306E+29
n⁵	1.8602483114076E+37

Nth Root

^y√n

²√n	5332.8220484093
³√n	305.23762186468
⁴√n	73.026173721545
⁵√n	30.958708626277

Divisors of 28438991

1, 133, 213827, 28438991

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	-28438990	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 28438991 can be divided by 4 positive divisors. The sum of these divisors (counting 28438991) is 1, the average is 0.25.

Base conversion 28438991

Base	System	Value
2	Binary	1101100011111000111001111
3	Ternary	1222111211221222
4	Quaternary	1230133013033
5	Quinary	24240021431
6	Senary	2453313555
8	Octal	154370717
10	Decimal	28438991
12	Duodecimal	96358bb
16	Hexadecimal	1b1f1cf
20	Vigesimal	8heh9b
36	Base36	gxjnz

Cryptographic Hash Functions

md5	849e9386eef8be32082f495c5a0e51a4
sha1	73516fcaa09413cdf2ec4fcc7e3d38072e089bcf
sha256	3b285e28fd9d9cab2425aced3006ce9429f5e179eec75802576657bb67b20dfd
sha512	f2856ace0e7117a0750a0a12d5fc9716cc876e37cad4eb833d3c38182544d830052c9834445b2bf9ceda68d540a5467a83dda4ffe8546b837b20272102ccd289
ripemd-160	3e1ad67aa3f02d37d12a2bbd35835a4254a8d798

28438991 as geometric shapes

Circle

Radius = n

Diameter	56877982
Circumference	178687450.40221
Area	2.5408453969007E+15

Sphere

Radius = n

Volume	9.6345439166469E+22
Surface area	1.0163381587603E+16
Circumference	178687450.40221

Square

Length = n

Perimeter	113755964
Area	808776209098081
Diagonal	40218806.772406

Cube

Length = n

Surface area	4852657254588486
Volume	2.3000779331554E+22
Space diagonal	49257777.327994

Equilateral Triangle

Length = n

Perimeter	85316973
Area	3.5021037152771E+14
Altitude	24628888.663997

Triangular Pyramid

Length = n

Surface area	3.5021037152771E+14
Volume	2.7106678396529E+21
Height	13406268.924135