28123791 (number)

28123791 is an odd 8-digits composite number following 28123790 and preceding 28123792. In scientific notation, it is written as 2.8123791 × 10^7. The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors. There are 18729432 positive integers (up to 28123791) that are relatively prime to 28123791.

Interesting facts

Basic properties

Name

Name twenty-eight million one hundred twenty-three thousand seven hundred ninety-one

Notation

Scientific notation 2.8123791 × 10^7
Engineering notation 2.8123791 × 10^6

Prime Factorization of 28123791

Prime Factorization 3 × 1063 × 8819

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28123791
Product of the distinct prime numbers

The prime factorization of 28123791 is 3 × 1063 × 8819. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 28123791)

Multiplication

n×y
n×2 56247582
n×3 84371373
n×4 112495164
n×5 140618955

Division

n÷y
n÷2 14061895.5
n÷3 9374597
n÷3 7030947.75
n÷5 5624758.2

Exponentiation

ny
n2 790947620211681
n3 2.2244445562781E+22
n4 6.2559813791852E+29
n5 1.759419128081E+37

Nth Root

y√n
2√n 5303.186872061
3√n 304.1057421564
4√n 72.822983130746
5√n 30.889776951812

Divisors of 28123791

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 -28123790
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 28123791 can be divided by 8 positive divisors. The sum of these divisors (counting 28123791) is 1, the average is 0.125.

Base conversion 28123791

Base System Value
2 Binary 1101011010010001010001111
3 Ternary 1221220211120220
4 Quaternary 1223102022033
5 Quinary 24144430131
6 Senary 2442442423
8 Octal 153221217
10 Decimal 28123791
12 Duodecimal 9503413
16 Hexadecimal 1ad228f
20 Vigesimal 8ff99b
36 Base36 gqsgf

Cryptographic Hash Functions

md5 4fc8f8328a2814dc3ba5fb82cdd98e2a
sha1 af604ef405e36844a53eb772ed4a55b44a74098a
sha256 5d47fa7bb500c438a02b5740bf70b16be4a5fc043e49e2e61f3857a1bb819f45
sha512 7acec1f4426b37bd8f6a8a8657a57af9836ed4a52821e115b528f82fadf66a2cc7b5b837c054ba0e852ff1d655931b6140c16ae8f11800e1a5df73ccb68098da
ripemd-160 0affb72522fbefe72f3ad054485630b27a263f5e

28123791 as geometric shapes

Circle

Radius = n
Diameter 56247582
Circumference 176706990.39339
Area 2.4848352330313E+15

Sphere

Radius = n
Volume 9.317731568428E+22
Surface area 9.9393409321254E+15
Circumference 176706990.39339

Square

Length = n
Perimeter 112495164
Area 790947620211681
Diagonal 39773046.657546

Cube

Length = n
Surface area 4745685721270086
Volume 2.2244445562781E+22
Space diagonal 48711834.913448

Equilateral Triangle

Length = n
Perimeter 84371373
Area 3.4249036608308E+14
Altitude 24355917.456724

Triangular Pyramid

Length = n
Surface area 3.4249036608308E+14
Volume 2.6215330501962E+21
Height 13257682.219182