28405 (number)

28405 is an odd 5-digits composite number following 28404 and preceding 28406. In scientific notation, it is written as 2.8405 × 10^4. The sum of its digits is 19. It has a total of 3 prime factors and 8 positive divisors. There are 19008 positive integers (up to 28405) that are relatively prime to 28405.

Interesting facts

Basic properties

Name

Name twenty-eight thousand four hundred five

Notation

Scientific notation 2.8405 × 10^4
Engineering notation 2.8405 × 10^3

Prime Factorization of 28405

Prime Factorization 299 × 5 × 19

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28405
Product of the distinct prime numbers

The prime factorization of 28405 is 299 × 5 × 19. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 10, 94, 1, 926, 569, 9124, 2944, 81001, 47194, 288259, 694597, 8065944, 3550419, 43786346, 6149885, 37665652, 642284180, 5630313315, 6201356252

Basic calculations (n = 28405)

Multiplication

n×y
n×2 56810
n×3 85215
n×4 113620
n×5 142025

Division

n÷y
n÷2 14202.5
n÷3 9468.3333333333
n÷3 7101.25
n÷5 5681

Exponentiation

ny
n2 806844025
n3 22918404530125
n4 650997280678200625
n5 1.8491577757664E+22

Nth Root

y√n
2√n 168.53782958137
3√n 30.511596414516
4√n 12.982212045001
5√n 7.774616196077

Divisors of 28405

1, 5, 19, 95, 299, 1495, 5681, 28405

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 -28404
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 28405 can be divided by 8 positive divisors. The sum of these divisors (counting 28405) is 1, the average is 0.125.

Base conversion 28405

Base System Value
2 Binary 110111011110101
3 Ternary 1102222001
4 Quaternary 12323311
5 Quinary 1402110
6 Senary 335301
8 Octal 67365
10 Decimal 28405
12 Duodecimal 14531
16 Hexadecimal 6ef5
20 Vigesimal 3b05
36 Base36 lx1

Cryptographic Hash Functions

md5 252f6d4524f82b63c027def22ced5230
sha1 0ecfbc41dd866cf2b4fedd19dc2170de0c24e002
sha256 69b81676826a40f6961a5ef4d74ef22dae6071283ba139372ba6f619ab2cd358
sha512 d4c92258df59be635879e6baf443498644f1f7d272a6a8dacbf3257fc8d9124dd4eca3b2ee7c2eb8bba47494933b865ee51a2d7c96ed38d4c4cad80ab454d1f7
ripemd-160 975d6b94087981468c2b72974b454fd99d3e46f7

28405 as geometric shapes

Circle

Radius = n
Diameter 56810
Circumference 178473.87865044
Area 2534775261.5328

Sphere

Radius = n
Volume 96000388405120
Surface area 10139101046.131
Circumference 178473.87865044

Square

Length = n
Perimeter 113620
Area 806844025
Diagonal 40170.736239208

Cube

Length = n
Surface area 4841064150
Volume 22918404530125
Space diagonal 49198.903188994

Equilateral Triangle

Length = n
Perimeter 85215
Area 349373711.27084
Altitude 24599.451594497

Triangular Pyramid

Length = n
Surface area 349373711.27084
Volume 2700959876204.6
Height 13390.245413069