21909728 (number)

21909728 is an even 8-digits composite number following 21909727 and preceding 21909729. In scientific notation, it is written as 2.1909728 × 10^7. The sum of its digits is 38. It has a total of 7 prime factors and 24 positive divisors. There are 10844800 positive integers (up to 21909728) that are relatively prime to 21909728.

Interesting facts

Basic properties

Name

Name twenty-one million nine hundred nine thousand seven hundred twenty-eight

Notation

Scientific notation 2.1909728 × 10^7
Engineering notation 2.1909728 × 10^6

Prime Factorization of 21909728

Prime Factorization 2 × 2 × 2 × 2 × 2 × 101 × 6779

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 1369358
Product of the distinct prime numbers

The prime factorization of 21909728 is 2 × 2 × 2 × 2 × 2 × 101 × 6779. Since it has a total of 7 prime factors.

Most popular turbo-numbers

10, 8, 59, 26, 431, 128, 3985, 6277, 50678, 88074, 197633, 314286, 3825066, 9156176, 96765811, 66486195, 243935806, 465308150, 6205401226, 488943884

Basic calculations (n = 21909728)

Multiplication

n×y
n×2 43819456
n×3 65729184
n×4 87638912
n×5 109548640

Division

n÷y
n÷2 10954864
n÷3 7303242.6666667
n÷3 5477432
n÷5 4381945.6

Exponentiation

ny
n2 480036181033984
n3 1.0517462156613E+22
n4 2.3043473510169E+29
n5 5.0487623678301E+36

Nth Root

y√n
2√n 4680.7828405086
3√n 279.82015662057
4√n 68.416246904581
5√n 29.385115170319

Divisors of 21909728

1, 2, 4, 8, 16, 32, 101, 202, 404, 808, 1616, 3232, 6779, 13558, 27116, 54232, 108464, 216928, 684679, 1369358, 2738716, 5477432, 10954864, 21909728

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 -21909727
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 21909728 can be divided by 24 positive divisors. The sum of these divisors (counting 21909728) is 1, the average is 0.041666666666667.

Base conversion 21909728

Base System Value
2 Binary 1010011100101000011100000
3 Ternary 1112020010111102
4 Quaternary 1103211003200
5 Quinary 21102102403
6 Senary 2101333532
8 Octal 123450340
10 Decimal 21909728
12 Duodecimal 74072a8
16 Hexadecimal 14e50e0
20 Vigesimal 6gie68
36 Base36 d1lnk

Cryptographic Hash Functions

md5 e6c5f563f981bdc7405de6df96ad89c0
sha1 f0dcac1678c9722c20fd917dc367df0841e2010c
sha256 bb43dc4ffea78fac277c109ab1aa20819ce21a473c2cc6340060dcdd5572ea0e
sha512 8282daace28ebbd6c53df0e9dd76a70fbb6970ef4a5d62cd350817f19ef49c4a57fce18cacfdff4148a6bafdbc38b226b109305854c589cd43f4ba54447a1edf
ripemd-160 dfad03561ac62460e86031ad3f2f4a4162a60d26

21909728 as geometric shapes

Circle

Radius = n
Diameter 43819456
Circumference 137662881.0539
Area 1.5080781397937E+15

Sphere

Radius = n
Volume 4.4055442460834E+22
Surface area 6.0323125591747E+15
Circumference 137662881.0539

Square

Length = n
Perimeter 87638912
Area 480036181033984
Diagonal 30985034.485506

Cube

Length = n
Surface area 2880217086203904
Volume 1.0517462156613E+22
Space diagonal 37948762.076014

Equilateral Triangle

Length = n
Perimeter 65729184
Area 2.0786176375555E+14
Altitude 18974381.038007

Triangular Pyramid

Length = n
Surface area 2.0786176375555E+14
Volume 1.239494801969E+21
Height 10328344.828502