28931291 is an odd 8-digits prime number following 28931290
and preceding 28931292 . In scientific notation, it is written as 2.8931291 × 10^7.
The sum of its digits is 35. It has a total of 1 prime factors and 2 positive divisors.
There are 28931290 positive integers (up to 28931291) that are relatively prime to 28931291.
28931291 has 2 divisors, whose sum is 28931292
The reverse of 28931291 is 19213982
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8
Name
twenty-eight million nine hundred thirty-one thousand two hundred ninety-one
Scientific notation
2.8931291 × 10^7
Engineering notation
2.8931291 × 10^6
Prime Factorization
28931291
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
28931291
Product of the distinct prime numbers
The prime factorization of 28931291 is 28931291.
Since it has a total of 1 prime factors.
7 , 2 , 45 , 19 , 7 , 691 , 3841 , 5236 , 63828 , 48592 , 30417 , 511449 , 6456807 , 409340 , 56870702 , 76856823 , 450405296 , 472493533 , 5814782918 , 6665534664
n×2
57862582
n×3
86793873
n×4
115725164
n×5
144656455
n÷2
14465645.5
n÷3
9643763.6666667
n÷3
7232822.75
n÷5
5786258.2
n2
837019598926681
n3
2.4216057589251E+22
n4
7.0060180898738E+29
n5
2.026931481094E+37
2 √n
5378.7815534747
3 √n
306.98885181996
4 √n
73.340176939211
5 √n
31.065157707062
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
28931292
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
14465646
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
5378.7816464326
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999308707
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28931291 can be divided by 2 positive divisors.
The sum of these divisors (counting 28931291) is 28931292, the average is 14465646.
Base
System
Value
2
Binary
1101110010111010011011011
3
Ternary
2000102212021022
4
Quaternary
1232113103123
5
Quinary
24401300131
6
Senary
2512033055
8
Octal
156272333
10
Decimal
28931291
12
Duodecimal
983278b
16
Hexadecimal
1b974db
20
Vigesimal
90g84b
36
Base36
h83iz
md5
751ee826e82370e4f9b4918e7e974e7c
sha1
7b2adaf85b041ccb43140be1ef8338b9fe24e8ca
sha256
235ebf8cac6d431b6fde96a815c22892de139bfb90a2d22b04e96727cdbd670d
sha512
65231d8e5da9d5effce0e02ca9a8312d7b44a47fa84b6370f1fefbe6a8b15f9a6105c4bfe4f3d6bb027c11a25d5cf5afe6581f42e03b4f220e4a972ddd5fb76e
ripemd-160
31cafc41cb4e7293e4f9f8c29ceb250546ee2ac5
Diameter
57862582
Circumference
181780662.52894
Area
2.6295746228987E+15
Volume
1.014359848284E+23
Surface area
1.0518298491595E+16
Circumference
181780662.52894
Perimeter
115725164
Area
837019598926681
Diagonal
40915024.109163
Surface area
5022117593560086
Volume
2.4216057589251E+22
Space diagonal
50110465.94056
Perimeter
86793873
Area
3.6244011806798E+14
Altitude
25055232.97028
Surface area
3.6244011806798E+14
Volume
2.8538897558272E+21
Height
13638341.369721