28231387 is an odd 8-digits prime number following 28231386
and preceding 28231388 . In scientific notation, it is written as 2.8231387 × 10^7.
The sum of its digits is 34. It has a total of 1 prime factors and 2 positive divisors.
There are 28231386 positive integers (up to 28231387) that are relatively prime to 28231387.
28231387 has 2 divisors, whose sum is 28231388
The reverse of 28231387 is 78313282
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 34 Digital Root 7
Name
twenty-eight million two hundred thirty-one thousand three hundred eighty-seven
Scientific notation
2.8231387 × 10^7
Engineering notation
2.8231387 × 10^6
Prime Factorization
28231387
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
28231387 Product of the distinct prime numbers
The prime factorization of 28231387 is 28231387.
Since it has a total of 1 prime factors.
5 , 7 , 65 , 17 , 686 , 817 , 7281 , 6056 , 20968 , 74083 , 581432 , 254021 , 4780781 , 5021924 , 85267629 , 41355170 , 653266890 , 751246606 , 9152324551 , 546511356
n×2
56462774
n×3
84694161
n×4
112925548
n×5
141156935
n÷2
14115693.5
n÷3
9410462.3333333
n÷3
7057846.75
n÷5
5646277.4
n2
797011211943769
n3
2.2500731967724E+22
n4
6.3522687196408E+29
n5
1.7933335655217E+37
2 √n5313.3216541068
3 √n304.49306455372
4 √n72.892534968313
5 √n30.913376486371
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
28231388 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
14115694 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
5313.3217482099 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999291569 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28231387 can be divided by 2 positive divisors.
The sum of these divisors (counting 28231387) is 28231388, the average is 14115694.
Base
System
Value
2
Binary
1101011101100011011011011
3
Ternary
1222010022011221
4
Quaternary
1223230123123
5
Quinary
24211401022
6
Senary
2445032511
8
Octal
153543333
10
Decimal
28231387
12
Duodecimal
9555737
16
Hexadecimal
1aec6db
20
Vigesimal
8g8i97
36
Base36
gt3h7
md5
78d322fe12e9716a78370a051500652c
sha1
028c4d4a695b8fc634958a343571f8b740944104
sha256
d5b8f8290f5e8b63e6cffa1c8d9e1c774bd1dfd81ca4328af04e3c109de81cc5
sha512
ca520cec76084c533eb22b2f065c1604cac7636adb158c414ea2ffc649e5df9dcea74b8d65b42c5fe2d16560c5c8e50d139cef79a2fad267e21265518b7c5fe4
ripemd-160
31e1c3d4e598ca86f0a75b9cf68107ccc6aa7fa7
Diameter
56462774
Circumference
177383035.9997
Area
2.5038845682712E+15
Volume
9.4250845666924E+22
Surface area
1.0015538273085E+16
Circumference
177383035.9997
Perimeter
112925548
Area
797011211943769
Diagonal
39925210.380003
Surface area
4782067271662614
Volume
2.2500731967724E+22
Space diagonal
48898196.652139
Perimeter
84694161
Area
3.4511597832216E+14
Altitude
24449098.32607
Surface area
3.4511597832216E+14
Volume
2.651736692673E+21
Height
13308403.460001