28931481 (number)

28931481 is an odd 8-digits composite number following 28931480 and preceding 28931482. In scientific notation, it is written as 2.8931481 × 10^7. The sum of its digits is 36. It has a total of 5 prime factors and 24 positive divisors. There are 18738720 positive integers (up to 28931481) that are relatively prime to 28931481.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred thirty-one thousand four hundred eighty-one

Notation

Scientific notation 2.8931481 × 10^7
Engineering notation 2.8931481 × 10^6

Prime Factorization of 28931481

Prime Factorization 3 × 3 × 53 × 131 × 463

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 9643827
Product of the distinct prime numbers

The prime factorization of 28931481 is 3 × 3 × 53 × 131 × 463. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 10, 7, 2, 446, 810, 8465, 3601, 50271, 61013, 585769, 823850, 2362941, 7372734, 3763308, 35314296, 368065896, 977539875, 8263296532, 1498973499

Basic calculations (n = 28931481)

Multiplication

n×y
n×2 57862962
n×3 86794443
n×4 115725924
n×5 144657405

Division

n÷y
n÷2 14465740.5
n÷3 9643827
n÷3 7232870.25
n÷5 5786296.2

Exponentiation

ny
n2 837030592853361
n3 2.4216534693556E+22
n4 7.0062021337245E+29
n5 2.0269980391401E+37

Nth Root

y√n
2√n 5378.7992154383
3√n 306.98952384613
4√n 73.340297350354
5√n 31.065198509696

Divisors of 28931481

1, 3, 9, 53, 131, 159, 393, 463, 477, 1179, 1389, 4167, 6943, 20829, 24539, 60653, 62487, 73617, 181959, 220851, 545877, 3214609, 9643827, 28931481

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -28931480
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 28931481 can be divided by 24 positive divisors. The sum of these divisors (counting 28931481) is 1, the average is 0.041666666666667.

Base conversion 28931481

Base System Value
2 Binary 1101110010111010110011001
3 Ternary 2000102212112100
4 Quaternary 1232113112121
5 Quinary 24401301411
6 Senary 2512034013
8 Octal 156272631
10 Decimal 28931481
12 Duodecimal 9832909
16 Hexadecimal 1b97599
20 Vigesimal 90g8e1
36 Base36 h83o9

Cryptographic Hash Functions

md5 8d82ff70bd0a4a2f9afe5cac024b1254
sha1 af556e16273c2316ac17551a6e5c3fba5480470d
sha256 2ead66c8e78128a95474be93326f28e1fc0638104301cfad29c17f29d02ab148
sha512 f131e51fc55c169aaab912eaf7d068460ba48ba61200d809efd3e37945e18ae3a0e11cb0b8f3003f54a7a658629b69c2b164b2db39ba7f2941f3ca29299c2ca5
ripemd-160 179429424b0cc0012569564d3297f7808979682b

28931481 as geometric shapes

Circle

Radius = n
Diameter 57862962
Circumference 181781856.33415
Area 2.629609161338E+15

Sphere

Radius = n
Volume 1.0143798331824E+23
Surface area 1.0518436645352E+16
Circumference 181781856.33415

Square

Length = n
Perimeter 115725924
Area 837030592853361
Diagonal 40915292.80974

Cube

Length = n
Surface area 5022183557120166
Volume 2.4216534693556E+22
Space diagonal 50110795.030214

Equilateral Triangle

Length = n
Perimeter 86794443
Area 3.6244487857788E+14
Altitude 25055397.515107

Triangular Pyramid

Length = n
Surface area 3.6244487857788E+14
Volume 2.8539459831088E+21
Height 13638430.93658