28995721 is an odd 8-digits prime number following 28995720
and preceding 28995722 . In scientific notation, it is written as 2.8995721 × 10^7.
The sum of its digits is 43. It has a total of 1 prime factors and 2 positive divisors.
There are 28995720 positive integers (up to 28995721) that are relatively prime to 28995721.
28995721 has 2 divisors, whose sum is 28995722
The reverse of 28995721 is 12759982
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 43 Digital Root 7
Name
twenty-eight million nine hundred ninety-five thousand seven hundred twenty-one
Scientific notation
2.8995721 × 10^7
Engineering notation
2.8995721 × 10^6
Prime Factorization
28995721
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
28995721 Product of the distinct prime numbers
The prime factorization of 28995721 is 28995721.
Since it has a total of 1 prime factors.
10 , 10 , 13 , 69 , 537 , 625 , 5855 , 9685 , 59617 , 88071 , 352187 , 951702 , 9435567 , 5104803 , 15311146 , 59048720 , 340548224 , 271647330 , 1004815481 , 2841152228
n×2
57991442
n×3
86987163
n×4
115982884
n×5
144978605
n÷2
14497860.5
n÷3
9665240.3333333
n÷3
7248930.25
n÷5
5799144.2
n2
840751836309841
n3
2.4378205675878E+22
n4
7.0686365025837E+29
n5
2.0496021187933E+37
2 √n5384.767497302
3 √n307.21657097049
4 √n73.380975036463
5 √n31.078981822467
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
28995722 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
14497861 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
5384.7675901565 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999310243 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 28995721 can be divided by 2 positive divisors.
The sum of these divisors (counting 28995721) is 28995722, the average is 14497861.
Base
System
Value
2
Binary
1101110100111000010001001
3
Ternary
2000120010122121
4
Quaternary
1232213002021
5
Quinary
24410330341
6
Senary
2513251241
8
Octal
156470211
10
Decimal
28995721
12
Duodecimal
9863b21
16
Hexadecimal
1ba7089
20
Vigesimal
914961
36
Base36
h9h8p
md5
3cb13cc5e15ff5436c0b7a25ea5d2313
sha1
a0cfede6ecdd3f50b1c8d8bd1e29aab14cc377a6
sha256
984d56e99424514640f27240a0e2e923bd43ee84a00d14c6d95fa8ce2cde5a59
sha512
9ad1f3fd528c4f2d6bd0134422b30ba318edf4db76d8ef4b946b57b08ad3597d473d7a8308135588139af34736376f307c931d2e118accec16ac25e44340bc37
ripemd-160
81fbd1d0cf886a37716bc7fcea31b7b7db0d4f87
Diameter
57991442
Circumference
182185488.15828
Area
2.6412997924431E+15
Volume
1.0211518914539E+23
Surface area
1.0565199169772E+16
Circumference
182185488.15828
Perimeter
115982884
Area
840751836309841
Diagonal
41006141.888986
Surface area
5044511017859046
Volume
2.4378205675878E+22
Space diagonal
50222061.974092
Perimeter
86987163
Area
3.6405622426137E+14
Altitude
25111030.987046
Surface area
3.6405622426137E+14
Volume
2.8729990910956E+21
Height
13668713.962995