28687538 (number)

28687538 is an even 8-digits composite number following 28687537 and preceding 28687539. In scientific notation, it is written as 2.8687538 × 10^7. The sum of its digits is 47. It has a total of 3 prime factors and 8 positive divisors. There are 13039780 positive integers (up to 28687538) that are relatively prime to 28687538.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8687538 × 10^7
Engineering notation 2.8687538 × 10^6

Prime Factorization of 28687538

Prime Factorization 2 × 11 × 1303979

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28687538
Product of the distinct prime numbers

The prime factorization of 28687538 is 2 × 11 × 1303979. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 9, 100, 13, 351, 37, 6175, 116, 82069, 61507, 818157, 544058, 3854056, 6588310, 97404510, 9994382, 779019269, 866524658, 4038963951, 1674359757

Basic calculations (n = 28687538)

Multiplication

n×y
n×2 57375076
n×3 86062614
n×4 114750152
n×5 143437690

Division

n÷y
n÷2 14343769
n÷3 9562512.6666667
n÷3 7171884.5
n÷5 5737507.6

Exponentiation

ny
n2 822974836501444
n3 2.3609121895179E+22
n4 6.7728758151458E+29
n5 1.9429713231628E+37

Nth Root

y√n
2√n 5356.0748687822
3√n 306.12426780966
4√n 73.185209358054
5√n 31.012634131296

Divisors of 28687538

1, 2, 11, 22, 1303979, 2607958, 14343769, 28687538

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28687537
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28687538 can be divided by 8 positive divisors. The sum of these divisors (counting 28687538) is 1, the average is 0.125.

Base conversion 28687538

Base System Value
2 Binary 1101101011011110010110010
3 Ternary 1222222110220102
4 Quaternary 1231123302302
5 Quinary 24321000123
6 Senary 2502512402
8 Octal 155336262
10 Decimal 28687538
12 Duodecimal 9735702
16 Hexadecimal 1b5bcb2
20 Vigesimal 8j5igi
36 Base36 h2vg2

Cryptographic Hash Functions

md5 67a36e1d772d41da4b9270d775b7a545
sha1 2b3e9e483b4f9524e28e84733e0a10d9993b50b9
sha256 66943435bfded8f09588971e3feae96ca7be0574d81d76a2b7753f0d092a5f1c
sha512 bff31b2505b63a70cec7ae9c0131d9bca54a1d293fcc98fa21db2566ee9b2ece72c62b20bc2edf3bc1c2b437a4ffce545d0c672ccd9f87a771cf0ed79b266571
ripemd-160 6792c103559846b9dc52790ac10138fbaa0a6fb1

28687538 as geometric shapes

Circle

Radius = n
Diameter 57375076
Circumference 180249117.26076
Area 2.5854517004422E+15

Sphere

Radius = n
Volume 9.8893658538134E+22
Surface area 1.0341806801769E+16
Circumference 180249117.26076

Square

Length = n
Perimeter 114750152
Area 822974836501444
Diagonal 40570305.310694

Cube

Length = n
Surface area 4937849019008664
Volume 2.3609121895179E+22
Space diagonal 49688273.360063

Equilateral Triangle

Length = n
Perimeter 86062614
Area 3.563585575428E+14
Altitude 24844136.680031

Triangular Pyramid

Length = n
Surface area 3.563585575428E+14
Volume 2.7823616983235E+21
Height 13523435.103565