28939945 (number)

28939945 is an odd 8-digits composite number following 28939944 and preceding 28939946. In scientific notation, it is written as 2.8939945 × 10^7. The sum of its digits is 49. It has a total of 3 prime factors and 8 positive divisors. There are 21933360 positive integers (up to 28939945) that are relatively prime to 28939945.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred thirty-nine thousand nine hundred forty-five

Notation

Scientific notation 2.8939945 × 10^7
Engineering notation 2.8939945 × 10^6

Prime Factorization of 28939945

Prime Factorization 5 × 19 × 304631

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 28939945
Product of the distinct prime numbers

The prime factorization of 28939945 is 5 × 19 × 304631. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 7, 91, 20, 54, 582, 7490, 2068, 19376, 1821, 223313, 579973, 6776654, 3661719, 99006059, 24379984, 852311224, 734563739, 5543930716, 4906323136

Basic calculations (n = 28939945)

Multiplication

n×y
n×2 57879890
n×3 86819835
n×4 115759780
n×5 144699725

Division

n÷y
n÷2 14469972.5
n÷3 9646648.3333333
n÷3 7234986.25
n÷5 5787989

Exponentiation

ny
n2 837520416603025
n3 2.4237794792869E+22
n4 7.014404482269E+29
n5 2.0299647992462E+37

Nth Root

y√n
2√n 5379.58595061
3√n 307.01945785913
4√n 73.345660748336
5√n 31.067015942246

Divisors of 28939945

1, 5, 19, 95, 304631, 1523155, 5787989, 28939945

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 -28939944
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 28939945 can be divided by 8 positive divisors. The sum of these divisors (counting 28939945) is 1, the average is 0.125.

Base conversion 28939945

Base System Value
2 Binary 1101110011001011010101001
3 Ternary 2000110022010211
4 Quaternary 1232121122221
5 Quinary 24402034240
6 Senary 2512141121
8 Octal 156313251
10 Decimal 28939945
12 Duodecimal 98377a1
16 Hexadecimal 1b996a9
20 Vigesimal 90h9h5
36 Base36 h8a7d

Cryptographic Hash Functions

md5 b822fc96e40bc35c0b7de07e43309bd3
sha1 1f07fe246c9fc0c806c43d22802356bac2852244
sha256 633808984b223f2df97932fe1e95ad0dab2e5aefbf2985a33bd04b28465e3d4b
sha512 51574501b803d0f781d15cd96ed493872ff3b7681b832ef62471597309db042964f070c66c48a714ce31341f857e59d340f2473239406303a7dd527f6f6c409f
ripemd-160 0b4576ea36e0c34d2cf94d329a2e8a81401a7d05

28939945 as geometric shapes

Circle

Radius = n
Diameter 57879890
Circumference 181835037.21459
Area 2.6311479880315E+15

Sphere

Radius = n
Volume 1.0152703741399E+23
Surface area 1.0524591952126E+16
Circumference 181835037.21459

Square

Length = n
Perimeter 115759780
Area 837520416603025
Diagonal 40927262.713331

Cube

Length = n
Surface area 5025122499618150
Volume 2.4237794792869E+22
Space diagonal 50125455.108249

Equilateral Triangle

Length = n
Perimeter 86819835
Area 3.6265697848317E+14
Altitude 25062727.554124

Triangular Pyramid

Length = n
Surface area 3.6265697848317E+14
Volume 2.8564515098409E+21
Height 13642420.904444