28931491 is an odd 8-digits prime number following 28931490
and preceding 28931492 . In scientific notation, it is written as 2.8931491 × 10^7.
The sum of its digits is 37. It has a total of 1 prime factors and 2 positive divisors.
There are 28931490 positive integers (up to 28931491) that are relatively prime to 28931491.
28931491 has 2 divisors, whose sum is 28931492
The reverse of 28931491 is 19413982
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 37 Digital Root 1
Name
twenty-eight million nine hundred thirty-one thousand four hundred ninety-one
Scientific notation
2.8931491 × 10^7
Engineering notation
2.8931491 × 10^6
Prime Factorization
28931491
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
28931491 Product of the distinct prime numbers
The prime factorization of 28931491 is 28931491.
Since it has a total of 1 prime factors.
6 , 9 , 3 , 61 , 204 , 745 , 3586 , 8421 , 97122 , 98311 , 511444 , 710275 , 1073656 , 3580755 , 19803448 , 80687379 , 348400404 , 736060923 , 1374695837 , 9737067611
n×2
57862982
n×3
86794473
n×4
115725964
n×5
144657455
n÷2
14465745.5
n÷3
9643830.3333333
n÷3
7232872.75
n÷5
5786298.2
n2
837031171483081
n3
2.4216559804482E+22
n4
7.0062118203434E+29
n5
2.0270015422436E+37
2 √n5378.8001450138
3 √n306.98955921585
4 √n73.340303687766
5 √n31.065200657197
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
28931492 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
14465746 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
5378.8002379713 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999308712 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28931491 can be divided by 2 positive divisors.
The sum of these divisors (counting 28931491) is 28931492, the average is 14465746.
Base
System
Value
2
Binary
1101110010111010110100011
3
Ternary
2000102212112201
4
Quaternary
1232113112203
5
Quinary
24401301431
6
Senary
2512034031
8
Octal
156272643
10
Decimal
28931491
12
Duodecimal
9832917
16
Hexadecimal
1b975a3
20
Vigesimal
90g8eb
36
Base36
h83oj
md5
2dc13077582676fa132a0f48b30c9c42
sha1
a97392dde2f933c8fddca7a6d1002c8e5c35d679
sha256
66282e183468af19b6f9659d41ed2cff177d81e4718664dd85ae24741cb3c603
sha512
f025c2375df493f7882b2b1f42a1ae27328c86d3ce5c3eb51b861b470b628868b65784517b4e914c6145ec5051cb7dcf1bfc80160b78a76cf3efb50cc6710cb5
ripemd-160
05b8584311b70f6bb2c1cbb99647cad69ade6adf
Diameter
57862982
Circumference
181781919.166
Area
2.6296109791569E+15
Volume
1.0143808850264E+23
Surface area
1.0518443916628E+16
Circumference
181781919.166
Perimeter
115725964
Area
837031171483081
Diagonal
40915306.951875
Surface area
5022187028898486
Volume
2.4216559804482E+22
Space diagonal
50110812.350722
Perimeter
86794473
Area
3.624451291319E+14
Altitude
25055406.175361
Surface area
3.624451291319E+14
Volume
2.8539489424598E+21
Height
13638435.650625