28428987 (number)

28428987 is an odd 8-digits composite number following 28428986 and preceding 28428988. In scientific notation, it is written as 2.8428987 × 10^7. The sum of its digits is 48. It has a total of 3 prime factors and 8 positive divisors. There are 18440352 positive integers (up to 28428987) that are relatively prime to 28428987.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8428987 × 10^7
Engineering notation 2.8428987 × 10^6

Prime Factorization of 28428987

Prime Factorization 3 × 37 × 256117

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28428987
Product of the distinct prime numbers

The prime factorization of 28428987 is 3 × 37 × 256117. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 1, 84, 83, 726, 185, 8979, 6964, 22306, 24820, 482681, 171664, 4946446, 1969211, 79256811, 12175093, 698449511, 384291635, 1315309217, 2252340271

Basic calculations (n = 28428987)

Multiplication

n×y
n×2 56857974
n×3 85286961
n×4 113715948
n×5 142144935

Division

n÷y
n÷2 14214493.5
n÷3 9476329
n÷3 7107246.75
n÷5 5685797.4

Exponentiation

ny
n2 808207301846169
n3 2.297651487749E+22
n4 6.5319904275746E+29
n5 1.8569787094964E+37

Nth Root

y√n
2√n 5331.8840009888
3√n 305.20182646328
4√n 73.019750759563
5√n 30.95653024724

Divisors of 28428987

1, 3, 37, 111, 256117, 768351, 9476329, 28428987

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 -28428986
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 28428987 can be divided by 8 positive divisors. The sum of these divisors (counting 28428987) is 1, the average is 0.125.

Base conversion 28428987

Base System Value
2 Binary 1101100011100101010111011
3 Ternary 1222111100020110
4 Quaternary 1230130222323
5 Quinary 24234211422
6 Senary 2453155403
8 Octal 154345273
10 Decimal 28428987
12 Duodecimal 962bb63
16 Hexadecimal 1b1cabb
20 Vigesimal 8hdc97
36 Base36 gxby3

Cryptographic Hash Functions

md5 8c39765139f087b4ee565bfc7574d302
sha1 21161759aea146baa2a351ace2de15cd5369b8a0
sha256 6e69fbd7b372b729e6c62f55d2c057ecc46795ddd958c34bfeb2c52d5089ff03
sha512 c582eff5f03628413d903284a988365d711de75299e93c2b5d636890107b3f5e4234a8162cb2ac92184f7b70aa1ae7d4133bff8d790db2ec023a9ba23fb8a45d
ripemd-160 2a23265c7045e1318937182e52731df01e5ade00

28428987 as geometric shapes

Circle

Radius = n
Diameter 56857974
Circumference 178624593.4164
Area 2.5390581220576E+15

Sphere

Radius = n
Volume 9.6243800458958E+22
Surface area 1.015623248823E+16
Circumference 178624593.4164

Square

Length = n
Perimeter 113715948
Area 808207301846169
Diagonal 40204658.979928

Cube

Length = n
Surface area 4849243811077014
Volume 2.297651487749E+22
Space diagonal 49240449.891715

Equilateral Triangle

Length = n
Perimeter 85286961
Area 3.4996402746143E+14
Altitude 24620224.945858

Triangular Pyramid

Length = n
Surface area 3.4996402746143E+14
Volume 2.7078082463178E+21
Height 13401552.993309