28666721 (number)

28666721 is an odd 8-digits prime number following 28666720 and preceding 28666722. In scientific notation, it is written as 2.8666721 × 10^7. The sum of its digits is 38. It has a total of 1 prime factors and 2 positive divisors. There are 28666720 positive integers (up to 28666721) that are relatively prime to 28666721.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8666721 × 10^7
Engineering notation 2.8666721 × 10^6

Prime Factorization of 28666721

Prime Factorization 28666721

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 28666721
Product of the distinct prime numbers

The prime factorization of 28666721 is 28666721. Since it has a total of 1 prime factors.

Most popular turbo-numbers

4, 3, 41, 47, 381, 836, 8242, 2021, 73733, 78921, 968263, 723487, 5582344, 5579797, 24695683, 2719678, 347899429, 831216780, 8651533413, 7779467242

Basic calculations (n = 28666721)

Multiplication

n×y
n×2 57333442
n×3 86000163
n×4 114666884
n×5 143333605

Division

n÷y
n÷2 14333360.5
n÷3 9555573.6666667
n÷3 7166680.25
n÷5 5733344.2

Exponentiation

ny
n2 821780892891841
n3 2.3557763579661E+22
n4 6.7532383592211E+29
n5 1.9359319989029E+37

Nth Root

y√n
2√n 5354.1312087023
3√n 306.05020393194
4√n 73.171929103327
5√n 31.008131984933

Divisors of 28666721

1, 28666721

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 28666722
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 14333361
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 5354.1313020881
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999999302327
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28666721 can be divided by 2 positive divisors. The sum of these divisors (counting 28666721) is 28666722, the average is 14333361.

Base conversion 28666721

Base System Value
2 Binary 1101101010110101101100001
3 Ternary 1222221102100102
4 Quaternary 1231112231201
5 Quinary 24314313341
6 Senary 2502232145
8 Octal 155265541
10 Decimal 28666721
12 Duodecimal 9725655
16 Hexadecimal 1b56b61
20 Vigesimal 8j36g1
36 Base36 h2fdt

Cryptographic Hash Functions

md5 485c62382e8f4c053be757c4ac0a06c6
sha1 2ecff437a2ebfa484f286f5ecf9bd7dc7f0661da
sha256 b3c055a3bc8d2739eb0e2b29a531e7cb074fb24462d2d8d0f52bb24b844cd9ab
sha512 24f4a4885d4610bd6b4e0a9c3f25abe722c418cb81aafb4de4b59db55d8382f84cb76124adaf8c58ca38ac635ef14a2d942e9b27fb78e3d6cb731a7410cc9224
ripemd-160 6e3e49db32b23912cb98d2f044959e80f7b88e15

28666721 as geometric shapes

Circle

Radius = n
Diameter 57333442
Circumference 180118320.19222
Area 2.5817008159695E+15

Sphere

Radius = n
Volume 9.8678529329159E+22
Surface area 1.0326803263878E+16
Circumference 180118320.19222

Square

Length = n
Perimeter 114666884
Area 821780892891841
Diagonal 40540865.626966

Cube

Length = n
Surface area 4930685357351046
Volume 2.3557763579661E+22
Space diagonal 49652217.258402

Equilateral Triangle

Length = n
Perimeter 86000163
Area 3.558415647945E+14
Altitude 24826108.629201

Triangular Pyramid

Length = n
Surface area 3.558415647945E+14
Volume 2.7763090627947E+21
Height 13513621.875655