28687789 (number)

28687789 is an odd 8-digits composite number following 28687788 and preceding 28687790. In scientific notation, it is written as 2.8687789 × 10^7. The sum of its digits is 55. It has a total of 4 prime factors and 16 positive divisors. There are 24779520 positive integers (up to 28687789) that are relatively prime to 28687789.

Interesting facts

Basic properties

Name

Name twenty-eight million six hundred eighty-seven thousand seven hundred eighty-nine

Notation

Scientific notation 2.8687789 × 10^7
Engineering notation 2.8687789 × 10^6

Prime Factorization of 28687789

Prime Factorization 13 × 17 × 271 × 479

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 28687789
Product of the distinct prime numbers

The prime factorization of 28687789 is 13 × 17 × 271 × 479. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 3, 52, 55, 618, 287, 2119, 7904, 61243, 73660, 737605, 900248, 4012475, 6899374, 18222019, 12451756, 781989367, 814595400, 3561913231, 9195920728

Basic calculations (n = 28687789)

Multiplication

n×y
n×2 57375578
n×3 86063367
n×4 114751156
n×5 143438945

Division

n÷y
n÷2 14343894.5
n÷3 9562596.3333333
n÷3 7171947.25
n÷5 5737557.8

Exponentiation

ny
n2 822989237708521
n3 2.3609741600653E+22
n4 6.7731128538405E+29
n5 1.9430563242416E+37

Nth Root

y√n
2√n 5356.0983000688
3√n 306.12516061275
4√n 73.185369439997
5√n 31.012688399765

Divisors of 28687789

1, 13, 17, 221, 271, 479, 3523, 4607, 6227, 8143, 59891, 105859, 129809, 1687517, 2206753, 28687789

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 -28687788
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 28687789 can be divided by 16 positive divisors. The sum of these divisors (counting 28687789) is 1, the average is 0.0625.

Base conversion 28687789

Base System Value
2 Binary 1101101011011110110101101
3 Ternary 1222222111020201
4 Quaternary 1231123312231
5 Quinary 24321002124
6 Senary 2502513501
8 Octal 155336655
10 Decimal 28687789
12 Duodecimal 9735891
16 Hexadecimal 1b5bdad
20 Vigesimal 8j5j99
36 Base36 h2vn1

Cryptographic Hash Functions

md5 ece511f7fc1cf39dbcb47ef61fc95595
sha1 5fe2e0093e309fc080071d1418af12c4bca8b9af
sha256 ef3cb09c31556d218a3283c1107a6cb462dddeeb75747a294761d9b898e6b5e8
sha512 599cf8c3af3f23db55dec64b6a4c7214186a08432b0077766de6e37dd36e050753eaf3d7940a2348953f5602c89c3b008d4f75de85d2b05729732f10cca46f66
ripemd-160 374291cfae737ebf1f9166f768d16dc907fca75b

28687789 as geometric shapes

Circle

Radius = n
Diameter 57375578
Circumference 180250694.34027
Area 2.5854969431686E+15

Sphere

Radius = n
Volume 9.8896254354353E+22
Surface area 1.0341987772674E+16
Circumference 180250694.34027

Square

Length = n
Perimeter 114751156
Area 822989237708521
Diagonal 40570660.278298

Cube

Length = n
Surface area 4937935426251126
Volume 2.3609741600653E+22
Space diagonal 49688708.104816

Equilateral Triangle

Length = n
Perimeter 86063367
Area 3.5636479344838E+14
Altitude 24844354.052408

Triangular Pyramid

Length = n
Surface area 3.5636479344838E+14
Volume 2.782434731314E+21
Height 13523553.426099