28856721 (number)

28856721 is an odd 8-digits composite number following 28856720 and preceding 28856722. In scientific notation, it is written as 2.8856721 × 10^7. The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors. There are 18768000 positive integers (up to 28856721) that are relatively prime to 28856721.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8856721 × 10^7
Engineering notation 2.8856721 × 10^6

Prime Factorization of 28856721

Prime Factorization 3 × 61 × 137 × 1151

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 28856721
Product of the distinct prime numbers

The prime factorization of 28856721 is 3 × 61 × 137 × 1151. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 5, 49, 93, 347, 656, 4964, 7690, 75382, 76821, 260885, 168764, 114660, 9736337, 49388367, 27394623, 960308561, 591325010, 2888918362, 1709042464

Basic calculations (n = 28856721)

Multiplication

n×y
n×2 57713442
n×3 86570163
n×4 115426884
n×5 144283605

Division

n÷y
n÷2 14428360.5
n÷3 9618907
n÷3 7214180.25
n÷5 5771344.2

Exponentiation

ny
n2 832710346871841
n3 2.4029290153494E+22
n4 6.9340652178742E+29
n5 2.00094385388E+37

Nth Root

y√n
2√n 5371.8452137045
3√n 306.72487172351
4√n 73.292872871136
5√n 31.049127168786

Divisors of 28856721

1, 3, 61, 137, 183, 411, 1151, 3453, 8357, 25071, 70211, 157687, 210633, 473061, 9618907, 28856721

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 -28856720
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 28856721 can be divided by 16 positive divisors. The sum of these divisors (counting 28856721) is 1, the average is 0.0625.

Base conversion 28856721

Base System Value
2 Binary 1101110000101000110010001
3 Ternary 2000022001222110
4 Quaternary 1232011012101
5 Quinary 24341403341
6 Senary 2510255533
8 Octal 156050621
10 Decimal 28856721
12 Duodecimal 97b75a9
16 Hexadecimal 1b85191
20 Vigesimal 9071g1
36 Base36 h6hzl

Cryptographic Hash Functions

md5 c2126d55b9f9d745e9526cac576b1519
sha1 829c6932f56e6bc3a5a5c8d4bf59ea467e5e866f
sha256 7e1555a46e5f154ba45c6736d3273096c26d0ec023fd7e0ef6607b069aa9c327
sha512 0d6a5dbd335b8cec868ab4134960119b1f683c27683f6ad26b014c3db0f1d5bed7eb312b416b6b9fef96a195bf6e163cc1bf3a97bfa48f264e49f2eafc2b2f19
ripemd-160 c52919b8cfa04db2c31223ea63cd731297055f3e

28856721 as geometric shapes

Circle

Radius = n
Diameter 57713442
Circumference 181312125.40058
Area 2.6160367083008E+15

Sphere

Radius = n
Volume 1.0065365522293E+23
Surface area 1.0464146833203E+16
Circumference 181312125.40058

Square

Length = n
Perimeter 115426884
Area 832710346871841
Diagonal 40809566.203817

Cube

Length = n
Surface area 4996262081231046
Volume 2.4029290153494E+22
Space diagonal 49981306.91184

Equilateral Triangle

Length = n
Perimeter 86570163
Area 3.6057415719258E+14
Altitude 24990653.45592

Triangular Pyramid

Length = n
Surface area 3.6057415719258E+14
Volume 2.8318790024391E+21
Height 13603188.734606