28991018 (number)

28991018 is an even 8-digits composite number following 28991017 and preceding 28991019. In scientific notation, it is written as 2.8991018 × 10^7. The sum of its digits is 38. It has a total of 4 prime factors and 16 positive divisors. There are 11404800 positive integers (up to 28991018) that are relatively prime to 28991018.

Interesting facts

Basic properties

Name

Name twenty-eight million nine hundred ninety-one thousand eighteen

Notation

Scientific notation 2.8991018 × 10^7
Engineering notation 2.8991018 × 10^6

Prime Factorization of 28991018

Prime Factorization 2 × 119 × 41 × 2971

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 28991018
Product of the distinct prime numbers

The prime factorization of 28991018 is 2 × 119 × 41 × 2971. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 5, 42, 67, 529, 416, 4689, 4548, 95185, 41986, 680255, 163068, 1558218, 5352566, 44574055, 95978433, 583010718, 922964044, 1742769612, 303009423

Basic calculations (n = 28991018)

Multiplication

n×y
n×2 57982036
n×3 86973054
n×4 115964072
n×5 144955090

Division

n÷y
n÷2 14495509
n÷3 9663672.6666667
n÷3 7247754.5
n÷5 5798203.6

Exponentiation

ny
n2 840479124676324
n3 2.4366345432116E+22
n4 7.0640515901668E+29
n5 2.0479404680345E+37

Nth Root

y√n
2√n 5384.3307847865
3√n 307.19996027063
4√n 73.377999323956
5√n 31.077973577593

Divisors of 28991018

1, 2, 41, 82, 119, 238, 2971, 4879, 5942, 9758, 121811, 243622, 353549, 707098, 14495509, 28991018

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 -28991017
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 28991018 can be divided by 16 positive divisors. The sum of these divisors (counting 28991018) is 1, the average is 0.0625.

Base conversion 28991018

Base System Value
2 Binary 1101110100101111000101010
3 Ternary 2000112220012102
4 Quaternary 1232211320222
5 Quinary 24410203033
6 Senary 2513213402
8 Octal 156457052
10 Decimal 28991018
12 Duodecimal 9861262
16 Hexadecimal 1ba5e2a
20 Vigesimal 913hai
36 Base36 h9dm2

Cryptographic Hash Functions

md5 2f0d551104831acd21d1cf5c0d4d0b74
sha1 e67153345936abeed76b36282ae962e766fad786
sha256 88192eaa99e30692f0e5c293bded130c1a13ae38984e35536853d9ef680ebf34
sha512 30aa0c08cddca100e16739d8f99b1ac59e45d85d0d306b238d766d79396355be162582d049f68e133f36bd9c02bbfb98fb808b65cde2b0aef42a8e290c38801e
ripemd-160 5a02f7c47afc059fcaf76668b7bd507c71123efb

28991018 as geometric shapes

Circle

Radius = n
Diameter 57982036
Circumference 182155938.33778
Area 2.6404430435787E+15

Sphere

Radius = n
Volume 1.0206550907249E+23
Surface area 1.0561772174315E+16
Circumference 182155938.33778

Square

Length = n
Perimeter 115964072
Area 840479124676324
Diagonal 40999490.842603

Cube

Length = n
Surface area 5042874748057944
Volume 2.4366345432116E+22
Space diagonal 50213916.139144

Equilateral Triangle

Length = n
Perimeter 86973054
Area 3.639381366601E+14
Altitude 25106958.069572

Triangular Pyramid

Length = n
Surface area 3.639381366601E+14
Volume 2.8716013479638E+21
Height 13666496.947534