28859987 is an odd 8-digits composite number following 28859986
and preceding 28859988 . In scientific notation, it is written as 2.8859987 × 10^7.
The sum of its digits is 56. It has a total of 2 prime factors and 4 positive divisors.
There are 26639976 positive integers (up to 28859987) that are relatively prime to 28859987.
28859987 has 4 divisors, whose sum is 31080000
The reverse of 28859987 is 78995882
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 56
Digital Root 2
Name
twenty-eight million eight hundred fifty-nine thousand nine hundred eighty-seven
Scientific notation
2.8859987 × 10^7
Engineering notation
2.8859987 × 10^6
Prime Factorization
13 × 2219999
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
28859987
Product of the distinct prime numbers
The prime factorization of 28859987 is 13 × 2219999.
Since it has a total of 2 prime factors.
9 , 4 , 43 , 71 , 805 , 367 , 7309 , 1695 , 20692 , 73871 , 569505 , 57159 , 3570710 , 1518055 , 28560018 , 56845336 , 316091794 , 878263184 , 3151678474 , 3768784031
n×2
57719974
n×3
86579961
n×4
115439948
n×5
144299935
n÷2
14429993.5
n÷3
9619995.6666667
n÷3
7214996.75
n÷5
5771997.4
n2
832898849640169
n3
2.403744997293E+22
n4
6.9372049373192E+29
n5
2.0020764430737E+37
2 √n
5372.1491974814
3 √n
306.73644298092
4 √n
73.294946602623
5 √n
31.04982996422
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
-28859986
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 28859987 can be divided by 4 positive divisors.
The sum of these divisors (counting 28859987) is 1, the average is 0.25.
Base
System
Value
2
Binary
1101110000101111001010011
3
Ternary
2000022020110102
4
Quaternary
1232011321103
5
Quinary
24342004422
6
Senary
2510323015
8
Octal
156057123
10
Decimal
28859987
12
Duodecimal
97b946b
16
Hexadecimal
1b85e53
20
Vigesimal
9079j7
36
Base36
h6kib
md5
d19b557785e5defeaf6935bbfae833d3
sha1
d91a68a825fc00bf36f9a87d738b666e796fd8fb
sha256
ef7764ea868a7b1722cb7d8e384dcf6ad64dcaf17539027d852afdb33b395632
sha512
3b01bd993ca6ad4dad17d1d8f7a88cf70853d654f94590a83fc944e332d27094a67387a8ada6e459abfd6371b85108287f5a3346529948bb76f39c3b9002cac9
ripemd-160
7f77cd21fe91ffc88dff5d92565a3bb625d347e1
Diameter
57719974
Circumference
181332646.28379
Area
2.6166289072129E+15
Volume
1.0068783499465E+23
Surface area
1.0466515628852E+16
Circumference
181332646.28379
Perimeter
115439948
Area
832898849640169
Diagonal
40814185.025311
Surface area
4997393097841014
Volume
2.403744997293E+22
Space diagonal
49986963.789777
Perimeter
86579961
Area
3.6065578128561E+14
Altitude
24993481.894889
Surface area
3.6065578128561E+14
Volume
2.8328406463819E+21
Height
13604728.34177