28388638 (number)

28388638 is an even 8-digits composite number following 28388637 and preceding 28388639. In scientific notation, it is written as 2.8388638 × 10^7. The sum of its digits is 46. It has a total of 3 prime factors and 8 positive divisors. There are 14164920 positive integers (up to 28388638) that are relatively prime to 28388638.

Interesting facts

Basic properties

Name

Name twenty-eight million three hundred eighty-eight thousand six hundred thirty-eight

Notation

Scientific notation 2.8388638 × 10^7
Engineering notation 2.8388638 × 10^6

Prime Factorization of 28388638

Prime Factorization 2 × 491 × 28909

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28388638
Product of the distinct prime numbers

The prime factorization of 28388638 is 2 × 491 × 28909. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 7, 88, 35, 712, 71, 1567, 8930, 80123, 58665, 912806, 629399, 4516045, 3158226, 96759542, 44073284, 2446913, 533430075, 1367380332, 8264126073

Basic calculations (n = 28388638)

Multiplication

n×y
n×2 56777276
n×3 85165914
n×4 113554552
n×5 141943190

Division

n÷y
n÷2 14194319
n÷3 9462879.3333333
n÷3 7097159.5
n÷5 5677727.6

Exponentiation

ny
n2 805914767495044
n3 2.2878822593271E+22
n4 6.4949861246659E+29
n5 1.8438380990816E+37

Nth Root

y√n
2√n 5328.0989104933
3√n 305.05736804967
4√n 72.99382789314
5√n 30.947737990534

Divisors of 28388638

1, 2, 491, 982, 28909, 57818, 14194319, 28388638

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 -28388637
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 28388638 can be divided by 8 positive divisors. The sum of these divisors (counting 28388638) is 1, the average is 0.125.

Base conversion 28388638

Base System Value
2 Binary 1101100010010110100011110
3 Ternary 1222102021220001
4 Quaternary 1230102310132
5 Quinary 24231414023
6 Senary 2452244514
8 Octal 154226436
10 Decimal 28388638
12 Duodecimal 961073a
16 Hexadecimal 1b12d1e
20 Vigesimal 8h8bbi
36 Base36 gwgta

Cryptographic Hash Functions

md5 dd0d2bdf2f26397f9c0177b2cf37dc4f
sha1 5537ac5ff1825a11bf69040ac947159d45d5bb5d
sha256 8b16b9801703ef087b81aa8d3f21bf0448aecacd63668d00e7001917a40bd447
sha512 cf8e7692e187b7e9a7663669e97c12a33312e21ae6a9106eceda6b9bdab703e106cae01d5fa7962078f8f8a19e20ab909422bff2cc28db61fc224e18143e36b1
ripemd-160 9be881b3de32c06dbc136b7029252503dc113c70

28388638 as geometric shapes

Circle

Radius = n
Diameter 56777276
Circumference 178371073.17244
Area 2.531855912982E+15

Sphere

Radius = n
Volume 9.5834587975739E+22
Surface area 1.0127423651928E+16
Circumference 178371073.17244

Square

Length = n
Perimeter 113554552
Area 805914767495044
Diagonal 40147596.8769

Cube

Length = n
Surface area 4835488604970264
Volume 2.2878822593271E+22
Space diagonal 49170563.373681

Equilateral Triangle

Length = n
Perimeter 85165914
Area 3.4897133096787E+14
Altitude 24585281.68684

Triangular Pyramid

Length = n
Surface area 3.4897133096787E+14
Volume 2.696295100211E+21
Height 13382532.2923