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

28981 (number)

28981 is an odd 5-digits composite number following 28980 and preceding 28982. In scientific notation, it is written as 2.8981 × 10^4. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 28512 positive integers (up to 28981) that are relatively prime to 28981.

Interesting facts

28981 has 4 divisors, whose sum is 29452
The reverse of 28981 is 18982
Previous prime number is 73

Basic properties

Is Prime? no
Number parity odd
Number length 5
Sum of Digits 28
Digital Root 1

Name

Name	twenty-eight thousand nine hundred eighty-one

Notation

Scientific notation	2.8981 × 10^4
Engineering notation	2.8981 × 10^3

Prime Factorization of 28981

Prime Factorization 73 × 397

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	28981	Product of the distinct prime numbers

The prime factorization of 28981 is 73 × 397. Since it has a total of 2 prime factors.

Most popular turbo-numbers

6, 8, 53, 83, 572, 281, 6708, 5527, 29828, 40739, 795390, 649991, 5169296, 6164820, 29378069, 95268140, 251429142, 216625307, 6180387261, 2386243675

Basic calculations (n = 28981)

Multiplication

n×y

n×2	57962
n×3	86943
n×4	115924
n×5	144905

Division

n÷y

n÷2	14490.5
n÷3	9660.3333333333
n÷3	7245.25
n÷5	5796.2

Exponentiation

n^y

n²	839898361
n³	24341094400141
n⁴	705429256810486321
n⁵	2.0444045291625E+22

Nth Root

^y√n

²√n	170.23806859807
³√n	30.716457133562
⁴√n	13.047531130374
⁵√n	7.8058944293154

Divisors of 28981

1, 73, 397, 28981

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	-28980	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 28981 can be divided by 4 positive divisors. The sum of these divisors (counting 28981) is 1, the average is 0.25.

Base conversion 28981

Base	System	Value
2	Binary	111000100110101
3	Ternary	1110202101
4	Quaternary	13010311
5	Quinary	1411411
6	Senary	342101
8	Octal	70465
10	Decimal	28981
12	Duodecimal	14931
16	Hexadecimal	7135
20	Vigesimal	3c91
36	Base36	md1

Cryptographic Hash Functions

md5	cfdb837185d240f5ac2271882e295c23
sha1	28b47e332e000defc3a8d54c2f32cb5c5293ed97
sha256	34213ba12b7fbd975322591ebc7f89a52e7d34ad7256003d51521b52c3a48453
sha512	26d37ca4dcba9f4aa2f2041e0d53efcf14adff0cbd28300896c5959598d78bee2b86d4d23890759124e40f7ddd6e4cb542557358b29bb5f8c35a582a1456bdd3
ripemd-160	c930465b48a90e2cf852c454e809228d21d1cf2e

28981 as geometric shapes

Circle

Radius = n

Diameter	57962
Circumference	182092.99338737
Area	2638618520.6797

Sphere

Radius = n

Volume	1.0195973779709E+14
Surface area	10554474082.719
Circumference	182092.99338737

Square

Length = n

Perimeter	115924
Area	839898361
Diagonal	40985.323251135

Cube

Length = n

Surface area	5039390166
Volume	24341094400141
Space diagonal	50196.564454154

Equilateral Triangle

Length = n

Perimeter	86943
Area	363686658.61146
Altitude	25098.282227077

Triangular Pyramid

Length = n

Surface area	363686658.61146
Volume	2868625485306.9
Height	13661.774417045