21287744 (number)

21287744 is an even 8-digits composite number following 21287743 and preceding 21287745. In scientific notation, it is written as 2.1287744 × 10^7. The sum of its digits is 35. It has a total of 8 prime factors and 28 positive divisors. There are 10606464 positive integers (up to 21287744) that are relatively prime to 21287744.

Interesting facts

Basic properties

Name

Name twenty-one million two hundred eighty-seven thousand seven hundred forty-four

Notation

Scientific notation 2.1287744 × 10^7
Engineering notation 2.1287744 × 10^6

Prime Factorization of 21287744

Prime Factorization 2 × 2 × 2 × 2 × 2 × 2 × 487 × 683

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 665242
Product of the distinct prime numbers

The prime factorization of 21287744 is 2 × 2 × 2 × 2 × 2 × 2 × 487 × 683. Since it has a total of 8 prime factors.

Most popular turbo-numbers

5, 7, 18, 84, 669, 238, 8054, 6431, 40446, 85036, 668321, 968673, 2456565, 5854326, 39784829, 82599126, 735845274, 746432690, 5161545014, 6579516908

Basic calculations (n = 21287744)

Multiplication

n×y
n×2 42575488
n×3 63863232
n×4 85150976
n×5 106438720

Division

n÷y
n÷2 10643872
n÷3 7095914.6666667
n÷3 5321936
n÷5 4257548.8

Exponentiation

ny
n2 453168044609536
n3 9.6469253226284E+21
n4 2.0536127665523E+29
n5 4.3716782849497E+36

Nth Root

y√n
2√n 4613.8643239697
3√n 277.14680710402
4√n 67.925432085263
5√n 29.216347929282

Divisors of 21287744

1, 2, 4, 8, 16, 32, 64, 487, 683, 974, 1366, 1948, 2732, 3896, 5464, 7792, 10928, 15584, 21856, 31168, 43712, 332621, 665242, 1330484, 2660968, 5321936, 10643872, 21287744

28 divisors

τ Total Divisors 28
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21287743
Sum of the proper positive divisors of n
A Arithmetic Mean 0.035714285714286
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 28
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21287744 can be divided by 28 positive divisors. The sum of these divisors (counting 21287744) is 1, the average is 0.035714285714286.

Base conversion 21287744

Base System Value
2 Binary 1010001001101001101000000
3 Ternary 1111001112021222
4 Quaternary 1101031031000
5 Quinary 20422201434
6 Senary 2040134212
8 Octal 121151500
10 Decimal 21287744
12 Duodecimal 7167368
16 Hexadecimal 144d340
20 Vigesimal 6d0j74
36 Base36 co9q8

Cryptographic Hash Functions

md5 42a635234734e264e79bf192f7d4ac7e
sha1 f1d44a051cc5d0fe05de6cb55d3e33452df820af
sha256 2cde0f692f3dc29fe29ccdcdb458f0a7a85e37ad74f9bd26d199a3ddd252fd9b
sha512 dd99f85efc468e17f29854a215736159b768b42700b56fa6222618e2e2d12a1e9085e6e8772d4f0e2cc6e950c341c4439bb14f296a77cff2e515f2fc006a4aaf
ripemd-160 b9e7caef0fe40b35a2aa4a9ed26772bd6dda1c0c

21287744 as geometric shapes

Circle

Radius = n
Diameter 42575488
Circumference 133754840.3238
Area 1.423669399787E+15

Sphere

Radius = n
Volume 4.0408946297732E+22
Surface area 5.6946775991479E+15
Circumference 133754840.3238

Square

Length = n
Perimeter 85150976
Area 453168044609536
Diagonal 30105416.277126

Cube

Length = n
Surface area 2719008267657216
Volume 9.6469253226284E+21
Space diagonal 36871454.18652

Equilateral Triangle

Length = n
Perimeter 63863232
Area 1.9622751940759E+14
Altitude 18435727.09326

Triangular Pyramid

Length = n
Surface area 1.9622751940759E+14
Volume 1.1369010522051E+21
Height 10035138.759042