28821405 (number)

28821405 is an odd 8-digits composite number following 28821404 and preceding 28821406. In scientific notation, it is written as 2.8821405 × 10^7. The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors. There are 15371408 positive integers (up to 28821405) that are relatively prime to 28821405.

Interesting facts

Basic properties

Name

Name twenty-eight million eight hundred twenty-one thousand four hundred five

Notation

Scientific notation 2.8821405 × 10^7
Engineering notation 2.8821405 × 10^6

Prime Factorization of 28821405

Prime Factorization 15 × 1921427

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28821405
Product of the distinct prime numbers

The prime factorization of 28821405 is 15 × 1921427. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 28821405)

Multiplication

n×y
n×2 57642810
n×3 86464215
n×4 115285620
n×5 144107025

Division

n÷y
n÷2 14410702.5
n÷3 9607135
n÷3 7205351.25
n÷5 5764281

Exponentiation

ny
n2 830673386174025
n3 2.3941174085643E+22
n4 6.9001827449782E+29
n5 1.9887296146703E+37

Nth Root

y√n
2√n 5368.5570687104
3√n 306.5996932879
4√n 73.270437890805
5√n 31.041523614932

Divisors of 28821405

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28821404
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28821405 can be divided by 4 positive divisors. The sum of these divisors (counting 28821405) is 1, the average is 0.25.

Base conversion 28821405

Base System Value
2 Binary 1101101111100011110011101
3 Ternary 2000020021112110
4 Quaternary 1231330132131
5 Quinary 24334241110
6 Senary 2505424233
8 Octal 155743635
10 Decimal 28821405
12 Duodecimal 979b079
16 Hexadecimal 1b7c79d
20 Vigesimal 902da5
36 Base36 h5qql

Cryptographic Hash Functions

md5 d2090a6c82fcde6d9f98d17f7b1cf02e
sha1 02389fbc8cba69ea45f8b817ba70e8c340f85c4d
sha256 d741a3933715baa007d1aeb07b53921a612427eae53d3079120b4e140df8747d
sha512 ed6ff063c63f0ec31406653a2299c8b250480771ff755dc55b7e89265025b8980a91c240f6453066f046f6f1350b99108ce9d74de2e97f929b1df32b0ab4f9d3
ripemd-160 74a0d9a6d9c24a0477cf152b19a3fc9734e2f31a

28821405 as geometric shapes

Circle

Radius = n
Diameter 57642810
Circumference 181090228.42827
Area 2.6096374075369E+15

Sphere

Radius = n
Volume 1.0028455550103E+23
Surface area 1.0438549630147E+16
Circumference 181090228.42827

Square

Length = n
Perimeter 115285620
Area 830673386174025
Diagonal 40759621.837648

Cube

Length = n
Surface area 4984040317044150
Volume 2.3941174085643E+22
Space diagonal 49920137.80552

Equilateral Triangle

Length = n
Perimeter 86464215
Area 3.5969212733717E+14
Altitude 24960068.90276

Triangular Pyramid

Length = n
Surface area 3.5969212733717E+14
Volume 2.8214944242543E+21
Height 13586540.612549