28278987 (number)

28278987 is an odd 8-digits composite number following 28278986 and preceding 28278988. In scientific notation, it is written as 2.8278987 × 10^7. The sum of its digits is 51. It has a total of 3 prime factors and 8 positive divisors. There are 17138760 positive integers (up to 28278987) that are relatively prime to 28278987.

Interesting facts

Basic properties

Name

Name twenty-eight million two hundred seventy-eight thousand nine hundred eighty-seven

Notation

Scientific notation 2.8278987 × 10^7
Engineering notation 2.8278987 × 10^6

Prime Factorization of 28278987

Prime Factorization 11 × 3 × 856939

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28278987
Product of the distinct prime numbers

The prime factorization of 28278987 is 11 × 3 × 856939. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 28278987)

Multiplication

n×y
n×2 56557974
n×3 84836961
n×4 113115948
n×5 141394935

Division

n÷y
n÷2 14139493.5
n÷3 9426329
n÷3 7069746.75
n÷5 5655797.4

Exponentiation

ny
n2 799701105746169
n3 2.2614737173282E+22
n4 6.3952185853165E+29
n5 1.8085030323632E+37

Nth Root

y√n
2√n 5317.7990748053
3√n 304.66410033052
4√n 72.923240978479
5√n 30.923793865584

Divisors of 28278987

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 -28278986
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 28278987 can be divided by 8 positive divisors. The sum of these divisors (counting 28278987) is 1, the average is 0.125.

Base conversion 28278987

Base System Value
2 Binary 1101011111000000011001011
3 Ternary 1222012201110220
4 Quaternary 1223320003023
5 Quinary 24214411422
6 Senary 2450041123
8 Octal 153700313
10 Decimal 28278987
12 Duodecimal 95791a3
16 Hexadecimal 1af80cb
20 Vigesimal 8geh97
36 Base36 gu47f

Cryptographic Hash Functions

md5 596708d040685b96f4c661e38465f7c8
sha1 cc9dcce671d1d7af1d55727c40aabaca0dae39d5
sha256 86eaa5d607d81d397e9740d1f77beadb1e2871006eab6079c52bb5b7789223da
sha512 a2457d1a1ac1809a794212317d7f91bc8479456a58e4cfe07f88f6d85fa9aa34ede393ea7686cceb747cb303142e68151c255dc0fa9dfa34893d4cd7f5ce33c3
ripemd-160 f3ff559b14a55710e3e4c9fc36e0478f95a01caa

28278987 as geometric shapes

Circle

Radius = n
Diameter 56557974
Circumference 177682115.62032
Area 2.5123351188798E+15

Sphere

Radius = n
Volume 9.472838955526E+22
Surface area 1.0049340475519E+16
Circumference 177682115.62032

Square

Length = n
Perimeter 113115948
Area 799701105746169
Diagonal 39992526.945572

Cube

Length = n
Surface area 4798206634477014
Volume 2.2614737173282E+22
Space diagonal 48980642.27058

Equilateral Triangle

Length = n
Perimeter 84836961
Area 3.4628073650534E+14
Altitude 24490321.13529

Triangular Pyramid

Length = n
Surface area 3.4628073650534E+14
Volume 2.6651723349965E+21
Height 13330842.315191