28666987 is an odd 8-digits prime number following 28666986
and preceding 28666988 . In scientific notation, it is written as 2.8666987 × 10^7.
The sum of its digits is 52. It has a total of 1 prime factors and 2 positive divisors.
There are 28666986 positive integers (up to 28666987) that are relatively prime to 28666987.
28666987 has 2 divisors, whose sum is 28666988
The reverse of 28666987 is 78966682
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 52 Digital Root 7
Name
twenty-eight million six hundred sixty-six thousand nine hundred eighty-seven
Scientific notation
2.8666987 × 10^7
Engineering notation
2.8666987 × 10^6
Prime Factorization
28666987
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
28666987 Product of the distinct prime numbers
The prime factorization of 28666987 is 28666987.
Since it has a total of 1 prime factors.
9 , 6 , 88 , 4 , 739 , 237 , 9505 , 3733 , 39076 , 67293 , 172872 , 262715 , 1691372 , 962750 , 98771487 , 18054934 , 799329799 , 665589011 , 9476482628 , 5646540378
n×2
57333974
n×3
86000961
n×4
114667948
n×5
143334935
n÷2
14333493.5
n÷3
9555662.3333333
n÷3
7166746.75
n÷5
5733397.4
n2
821796143658169
n3
2.3558419366899E+22
n4
6.7534890173144E+29
n5
1.9360218186399E+37
2 √n5354.1560492761
3 √n306.05115054762
4 √n73.172098844273
5 √n31.008189529935
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
28666988 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
14333494 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
5354.1561426615 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999302333 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28666987 can be divided by 2 positive divisors.
The sum of these divisors (counting 28666987) is 28666988, the average is 14333494.
Base
System
Value
2
Binary
1101101010110110001101011
3
Ternary
1222221102201021
4
Quaternary
1231112301223
5
Quinary
24314320422
6
Senary
2502233311
8
Octal
155266153
10
Decimal
28666987
12
Duodecimal
9725837
16
Hexadecimal
1b56c6b
20
Vigesimal
8j3797
36
Base36
h2fl7
md5
8a65b357d9da6ae26b55fdad40da12ef
sha1
c48ad15639fe5ecb9f0f1501989e7fd9923f67da
sha256
4d48a570d46cc819864ff41e6212ee0985b7afc6b14be72cfb61d9e36f29982d
sha512
815dfdb3d126f8916378a93658c38bd2c6be00facbd7eb99117ff349fb0ee9756bf4d2caae66f789bfb00c54efaebbcc160b27f2ed9b1c59a8bb2e2a7696fc37
ripemd-160
8bf4d366fc2160a9348952c3aa3b06d0e1c55af0
Diameter
57333974
Circumference
180119991.51951
Area
2.5817487276649E+15
Volume
9.8681276284316E+22
Surface area
1.032699491066E+16
Circumference
180119991.51951
Perimeter
114667948
Area
821796143658169
Diagonal
40541241.807773
Surface area
4930776861949014
Volume
2.3558419366899E+22
Space diagonal
49652677.983917
Perimeter
86000961
Area
3.5584816857003E+14
Altitude
24826338.991958
Surface area
3.5584816857003E+14
Volume
2.7763863480618E+21
Height
13513747.269258