28491390 (number)

28491390 is an even 8-digits composite number following 28491389 and preceding 28491391. In scientific notation, it is written as 2.8491390 × 10^7. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 7597680 positive integers (up to 28491390) that are relatively prime to 28491390.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.8491390 × 10^7
Engineering notation 2.8491390 × 10^6

Prime Factorization of 28491390

Prime Factorization 2 × 3 × 15 × 316571

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 28491390
Product of the distinct prime numbers

The prime factorization of 28491390 is 2 × 3 × 15 × 316571. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 1, 53, 77, 760, 143, 6190, 1265, 25718, 46307, 379310, 723285, 6706055, 8895891, 24240629, 64750854, 949456755, 173358884, 8042636815, 7543019339

Basic calculations (n = 28491390)

Multiplication

n×y
n×2 56982780
n×3 85474170
n×4 113965560
n×5 142456950

Division

n÷y
n÷2 14245695
n÷3 9497130
n÷3 7122847.5
n÷5 5698278

Exponentiation

ny
n2 811759304132100
n3 2.3128150920156E+22
n4 6.5895316784503E+29
n5 1.8774491696808E+37

Nth Root

y√n
2√n 5337.7326647182
3√n 305.42497418776
4√n 73.059788288211
5√n 30.970108546368

Divisors of 28491390

1, 2, 3, 6, 15, 30, 45, 90, 316571, 633142, 949713, 1899426, 4748565, 9497130, 14245695, 28491390

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28491389
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28491390 can be divided by 16 positive divisors. The sum of these divisors (counting 28491390) is 1, the average is 0.0625.

Base conversion 28491390

Base System Value
2 Binary 1101100101011111001111110
3 Ternary 1222121111211200
4 Quaternary 1230223321332
5 Quinary 24243211030
6 Senary 2454400330
8 Octal 154537176
10 Decimal 28491390
12 Duodecimal 96600a6
16 Hexadecimal 1b2be7e
20 Vigesimal 8i189a
36 Base36 gyo3i

Cryptographic Hash Functions

md5 6056cb9133186486f17f670e58203d84
sha1 c41bc03cd0764af07c5f0745db0d1668a672509d
sha256 082e2bc02dd75f7af28f71526bf4fcc721c928f1a6cd4889d15dd61788492337
sha512 96f49daf52ab070287edb933799d2f1971ee3fab71917da4e2698c42def2400270cc1a5bd73eeb2fc984dbe62b4e5a98193080186f7e1a2fe64c26ff3d56c844
ripemd-160 a9393bab436327c91489b7309f26d9257eb23e25

28491390 as geometric shapes

Circle

Radius = n
Diameter 56982780
Circumference 179016683.02912
Area 2.5502170663446E+15

Sphere

Radius = n
Volume 9.6878972029172E+22
Surface area 1.0200868265378E+16
Circumference 179016683.02912

Square

Length = n
Perimeter 113965560
Area 811759304132100
Diagonal 40292910.148861

Cube

Length = n
Surface area 4870555824792600
Volume 2.3128150920156E+22
Space diagonal 49348535.05826

Equilateral Triangle

Length = n
Perimeter 85474170
Area 3.5150208956839E+14
Altitude 24674267.52913

Triangular Pyramid

Length = n
Surface area 3.5150208956839E+14
Volume 2.7256787253247E+21
Height 13430970.04962