28687581 (number)

28687581 is an odd 8-digits composite number following 28687580 and preceding 28687582. In scientific notation, it is written as 2.8687581 × 10^7. The sum of its digits is 45. It has a total of 4 prime factors and 12 positive divisors. There are 17651088 positive integers (up to 28687581) that are relatively prime to 28687581.

Interesting facts

Basic properties

Name

Name twenty-eight million six hundred eighty-seven thousand five hundred eighty-one

Notation

Scientific notation 2.8687581 × 10^7
Engineering notation 2.8687581 × 10^6

Prime Factorization of 28687581

Prime Factorization 13 × 27 × 13 × 6287

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 2206737
Product of the distinct prime numbers

The prime factorization of 28687581 is 13 × 27 × 13 × 6287. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 9, 76, 14, 259, 937, 1926, 4318, 85877, 79319, 135728, 466756, 6422451, 3246564, 62887366, 29945643, 163847495, 841817277, 8360907013, 7650870779

Basic calculations (n = 28687581)

Multiplication

n×y
n×2 57375162
n×3 86062743
n×4 114750324
n×5 143437905

Division

n÷y
n÷2 14343790.5
n÷3 9562527
n÷3 7171895.25
n÷5 5737516.2

Exponentiation

ny
n2 822977303631561
n3 2.3609228059092E+22
n4 6.7729164229267E+29
n5 1.9429858848894E+37

Nth Root

y√n
2√n 5356.0788829143
3√n 306.12442076036
4√n 73.185236782525
5√n 31.012643428312

Divisors of 28687581

1, 13, 27, 169, 351, 4563, 6287, 81731, 169749, 1062503, 2206737, 28687581

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28687580
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28687581 can be divided by 12 positive divisors. The sum of these divisors (counting 28687581) is 1, the average is 0.083333333333333.

Base conversion 28687581

Base System Value
2 Binary 1101101011011110011011101
3 Ternary 1222222110222000
4 Quaternary 1231123303131
5 Quinary 24321000311
6 Senary 2502512513
8 Octal 155336335
10 Decimal 28687581
12 Duodecimal 9735739
16 Hexadecimal 1b5bcdd
20 Vigesimal 8j5ij1
36 Base36 h2vh9

Cryptographic Hash Functions

md5 35d4d6af7a4f873e17ce8f173be6efbd
sha1 2340713e46eaf58d7a0f97abe9b046e5a95e47ef
sha256 0584ad0bbb4f89c6dfc6d0a80a248b40bf078574d8def123b76e3f44036a4d72
sha512 eb2fd57bb7679014968a03d5446d9e4d8f9b9c43b80d74b0d3a074a30e4897c46920f7625abaa4d17d57fe54018f2bf1f99a5cb20a05efcb13d90e25653e5c12
ripemd-160 bcf96d2d7f81cae42fd787d38b262c92cf993e44

28687581 as geometric shapes

Circle

Radius = n
Diameter 57375162
Circumference 180249387.43772
Area 2.58545945116E+15

Sphere

Radius = n
Volume 9.8894103236493E+22
Surface area 1.034183780464E+16
Circumference 180249387.43772

Square

Length = n
Perimeter 114750324
Area 822977303631561
Diagonal 40570366.121877

Cube

Length = n
Surface area 4937863821789366
Volume 2.3609228059092E+22
Space diagonal 49688347.838248

Equilateral Triangle

Length = n
Perimeter 86062743
Area 3.5635962584148E+14
Altitude 24844173.919124

Triangular Pyramid

Length = n
Surface area 3.5635962584148E+14
Volume 2.7823742098606E+21
Height 13523455.373959