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

28987 (number)

28987 is an odd 5-digits composite number following 28986 and preceding 28988. In scientific notation, it is written as 2.8987 × 10^4. The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors. There are 24000 positive integers (up to 28987) that are relatively prime to 28987.

Interesting facts

28987 has 8 divisors, whose sum is 34272
The reverse of 28987 is 78982
Previous prime number is 101

Basic properties

Is Prime? no
Number parity odd
Number length 5
Sum of Digits 34
Digital Root 7

Name

Name	twenty-eight thousand nine hundred eighty-seven

Notation

Scientific notation	2.8987 × 10^4
Engineering notation	2.8987 × 10^3

Prime Factorization of 28987

Prime Factorization 7 × 101 × 41

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	28987	Product of the distinct prime numbers

The prime factorization of 28987 is 7 × 101 × 41. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 1, 15, 36, 9, 668, 5778, 1170, 37098, 30746, 615213, 178554, 6091527, 265030, 76987974, 78250580, 467873590, 627369482, 5841860382, 448557815

Basic calculations (n = 28987)

Multiplication

n×y

n×2	57974
n×3	86961
n×4	115948
n×5	144935

Division

n÷y

n÷2	14493.5
n÷3	9662.3333333333
n÷3	7246.75
n÷5	5797.4

Exponentiation

n^y

n²	840246169
n³	24356215700803
n⁴	706013624519176561
n⁵	2.0465216933937E+22

Nth Root

^y√n

²√n	170.25569006644
³√n	30.718576752458
⁴√n	13.048206392698
⁵√n	7.8062176168416

Divisors of 28987

1, 7, 41, 101, 287, 707, 4141, 28987

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-28986	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28987 can be divided by 8 positive divisors. The sum of these divisors (counting 28987) is 1, the average is 0.125.

Base conversion 28987

Base	System	Value
2	Binary	111000100111011
3	Ternary	1110202121
4	Quaternary	13010323
5	Quinary	1411422
6	Senary	342111
8	Octal	70473
10	Decimal	28987
12	Duodecimal	14937
16	Hexadecimal	713b
20	Vigesimal	3c97
36	Base36	md7

Cryptographic Hash Functions

md5	6acf2725b339ee1695ebf86253f75221
sha1	d645158826a07657675aaf68d69fbb378fc6249d
sha256	1000fc6e1d5e15a38c12ab6ed8d325bbeeec1d7e581bff9525cbf3c6a064e809
sha512	544562468c19862b700dd4aa26d3446f6553ffccf75d4a55136e6768e6e275a25063e80080c9d8d4f7e0ebeb249729c2fc098008dec3fd748e8506532876eeea
ripemd-160	ff091b7d08285ac74dd3aaf8bfa7605a6d5f0114

28987 as geometric shapes

Circle

Radius = n

Diameter	57974
Circumference	182130.69249921
Area	2639711191.7374

Sphere

Radius = n

Volume	1.0202307775319E+14
Surface area	10558844766.949
Circumference	182130.69249921

Square

Length = n

Perimeter	115948
Area	840246169
Diagonal	40993.808532509

Cube

Length = n

Surface area	5041477014
Volume	24356215700803
Space diagonal	50206.956758999

Equilateral Triangle

Length = n

Perimeter	86961
Area	363837263.89328
Altitude	25103.4783795

Triangular Pyramid

Length = n

Surface area	363837263.89328
Volume	2870407547680
Height	13664.60284417