28931387 (number)

28931387 is an odd 8-digits composite number following 28931386 and preceding 28931388. In scientific notation, it is written as 2.8931387 × 10^7. The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors. There are 28920336 positive integers (up to 28931387) that are relatively prime to 28931387.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred thirty-one thousand three hundred eighty-seven

Notation

Scientific notation 2.8931387 × 10^7
Engineering notation 2.8931387 × 10^6

Prime Factorization of 28931387

Prime Factorization 4259 × 6793

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 28931387
Product of the distinct prime numbers

The prime factorization of 28931387 is 4259 × 6793. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 1, 77, 59, 767, 462, 6783, 3197, 28929, 55788, 298070, 580672, 5796647, 4857333, 56598705, 9657782, 399826793, 837868183, 6190624412, 7454663034

Basic calculations (n = 28931387)

Multiplication

n×y
n×2 57862774
n×3 86794161
n×4 115725548
n×5 144656935

Division

n÷y
n÷2 14465693.5
n÷3 9643795.6666667
n÷3 7232846.75
n÷5 5786277.4

Exponentiation

ny
n2 837025153743769
n3 2.4216298651695E+22
n4 7.0061110799978E+29
n5 2.026965110204E+37

Nth Root

y√n
2√n 5378.7904774215
3√n 306.98919137039
4√n 73.340237778599
5√n 31.065178323156

Divisors of 28931387

1, 4259, 6793, 28931387

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 -28931386
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 28931387 can be divided by 4 positive divisors. The sum of these divisors (counting 28931387) is 1, the average is 0.25.

Base conversion 28931387

Base System Value
2 Binary 1101110010111010100111011
3 Ternary 2000102212101212
4 Quaternary 1232113110323
5 Quinary 24401301022
6 Senary 2512033335
8 Octal 156272473
10 Decimal 28931387
12 Duodecimal 983284b
16 Hexadecimal 1b9753b
20 Vigesimal 90g897
36 Base36 h83ln

Cryptographic Hash Functions

md5 1f0ab4667d5be2148dddb3e63451bb7e
sha1 c8be28a3369f0a49d57545e8f4f21201b663499e
sha256 27318803daefecb6417401921f8e1841e63a3c2ab6f58c8ac67c89c77340f7f3
sha512 f10eeba711a1f71a14715ebc6c9e00e3f6c2e312687a796a7c419633d6ce8dd5bd1f339d79a660d11d8aa26d25b90f39025ed517f4202fcfdfb5ef89828397cf
ripemd-160 55dcfaf4c944f4e135d1e8282ec8d128c0eb24ae

28931387 as geometric shapes

Circle

Radius = n
Diameter 57862774
Circumference 181781265.71473
Area 2.6295920738713E+15

Sphere

Radius = n
Volume 1.014369945884E+23
Surface area 1.0518368295485E+16
Circumference 181781265.71473

Square

Length = n
Perimeter 115725548
Area 837025153743769
Diagonal 40915159.873665

Cube

Length = n
Surface area 5022150922462614
Volume 2.4216298651695E+22
Space diagonal 50110632.217438

Equilateral Triangle

Length = n
Perimeter 86794161
Area 3.6244252337434E+14
Altitude 25055316.108719

Triangular Pyramid

Length = n
Surface area 3.6244252337434E+14
Volume 2.8539181653088E+21
Height 13638386.624555