28755721 (number)

28755721 is an odd 8-digits composite number following 28755720 and preceding 28755722. In scientific notation, it is written as 2.8755721 × 10^7. The sum of its digits is 37. It has a total of 4 prime factors and 16 positive divisors. There are 25401600 positive integers (up to 28755721) that are relatively prime to 28755721.

Interesting facts

Basic properties

Name

Name twenty-eight million seven hundred fifty-five thousand seven hundred twenty-one

Notation

Scientific notation 2.8755721 × 10^7
Engineering notation 2.8755721 × 10^6

Prime Factorization of 28755721

Prime Factorization 19 × 17 × 127 × 701

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 28755721
Product of the distinct prime numbers

The prime factorization of 28755721 is 19 × 17 × 127 × 701. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 5, 98, 32, 568, 246, 1637, 6119, 81273, 8600, 890373, 775293, 9183235, 9579401, 43801018, 38631056, 999241068, 902239231, 9681593894, 2725815920

Basic calculations (n = 28755721)

Multiplication

n×y
n×2 57511442
n×3 86267163
n×4 115022884
n×5 143778605

Division

n÷y
n÷2 14377860.5
n÷3 9585240.3333333
n÷3 7188930.25
n÷5 5751144.2

Exponentiation

ny
n2 826891490229841
n3 2.3777860990324E+22
n4 6.8374953661453E+29
n5 1.9661710908767E+37

Nth Root

y√n
2√n 5362.4361068455
3√n 306.36660249593
4√n 73.228656322819
5√n 31.027361968939

Divisors of 28755721

1, 17, 19, 127, 323, 701, 2159, 2413, 11917, 13319, 41021, 89027, 226423, 1513459, 1691513, 28755721

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28755720
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28755721 can be divided by 16 positive divisors. The sum of these divisors (counting 28755721) is 1, the average is 0.0625.

Base conversion 28755721

Base System Value
2 Binary 1101101101100011100001001
3 Ternary 2000002221102201
4 Quaternary 1231230130021
5 Quinary 24330140341
6 Senary 2504200201
8 Octal 155543411
10 Decimal 28755721
12 Duodecimal 9769061
16 Hexadecimal 1b6c709
20 Vigesimal 8je961
36 Base36 h4c21

Cryptographic Hash Functions

md5 bfe1345a42eebff1e6bc9170da4d9e3e
sha1 0217f23a8caf3b13bd4cd888b277ccba921689c7
sha256 5598507d4d2ad25e717722d3cd568360c054aac2166b2219cd86daa6aed572d4
sha512 9620d82b4429a35a98facf18d64277f5883e10cccba8cf13316694f32e9485c423fa606307f08302de5dd618172f5182cb7601b7cb6402ca5a10852407f46863
ripemd-160 629e7b04012f67b8a7cc5650109ee2adcd0062b3

28755721 as geometric shapes

Circle

Radius = n
Diameter 57511442
Circumference 180677523.68456
Area 2.597756231022E+15

Sphere

Radius = n
Volume 9.960047120704E+22
Surface area 1.0391024924088E+16
Circumference 180677523.68456

Square

Length = n
Perimeter 115022884
Area 826891490229841
Diagonal 40666730.634017

Cube

Length = n
Surface area 4961348941379046
Volume 2.3777860990324E+22
Space diagonal 49806369.780275

Equilateral Triangle

Length = n
Perimeter 86267163
Area 3.5805451835611E+14
Altitude 24903184.890138

Triangular Pyramid

Length = n
Surface area 3.5805451835611E+14
Volume 2.8022477913948E+21
Height 13555576.878006