21105840 (number)

21105840 is an even 8-digits composite number following 21105839 and preceding 21105841. In scientific notation, it is written as 2.1105840 × 10^7. The sum of its digits is 21. It has a total of 8 prime factors and 80 positive divisors. There are 4534272 positive integers (up to 21105840) that are relatively prime to 21105840.

Interesting facts

Basic properties

Name

Name twenty-one million one hundred five thousand eight hundred forty

Notation

Scientific notation 2.1105840 × 10^7
Engineering notation 2.1105840 × 10^6

Prime Factorization of 21105840

Prime Factorization 2 × 2 × 2 × 2 × 5 × 21 × 17 × 739

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 2638230
Product of the distinct prime numbers

The prime factorization of 21105840 is 2 × 2 × 2 × 2 × 5 × 21 × 17 × 739. Since it has a total of 8 prime factors.

Most popular turbo-numbers

1, 5, 92, 55, 473, 834, 928, 7368, 33172, 83731, 803022, 90817, 3063785, 8526105, 43123319, 16777644, 585598162, 385370999, 6856196007, 9659148688

Basic calculations (n = 21105840)

Multiplication

n×y
n×2 42211680
n×3 63317520
n×4 84423360
n×5 105529200

Division

n÷y
n÷2 10552920
n÷3 7035280
n÷3 5276460
n÷5 4221168

Exponentiation

ny
n2 445456482105600
n3 9.4017332382837E+21
n4 1.984314774499E+29
n5 4.1880630140211E+36

Nth Root

y√n
2√n 4594.1092716652
3√n 276.35514039399
4√n 67.779858893813
5√n 29.166245584265

Divisors of 21105840

1, 2, 4, 5, 8, 10, 16, 17, 20, 21, 34, 40, 42, 68, 80, 84, 85, 105, 136, 168, 170, 210, 272, 336, 340, 357, 420, 680, 714, 739, 840, 1360, 1428, 1478, 1680, 1785, 2856, 2956, 3570, 3695, 5712, 5912, 7140, 7390, 11824, 12563, 14280, 14780, 15519, 25126, 28560, 29560, 31038, 50252, 59120, 62076, 62815, 77595, 100504, 124152, 125630, 155190, 201008, 248304, 251260, 263823, 310380, 502520, 527646, 620760, 1005040, 1055292, 1241520, 1319115, 2110584, 2638230, 4221168, 5276460, 10552920, 21105840

80 divisors

τ Total Divisors 80
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21105839
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0125
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 80
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21105840 can be divided by 80 positive divisors. The sum of these divisors (counting 21105840) is 1, the average is 0.0125.

Base conversion 21105840

Base System Value
2 Binary 1010000100000110010110000
3 Ternary 1110201021202210
4 Quaternary 1100200302300
5 Quinary 20400341330
6 Senary 2032212120
8 Octal 120406260
10 Decimal 21105840
12 Duodecimal 709a040
16 Hexadecimal 1420cb0
20 Vigesimal 6bi4c0
36 Base36 ckddc

Cryptographic Hash Functions

md5 8daf08402bffc0557019e6b62297c5cb
sha1 9892c17b18048c754b8f09d529eb9f5f72c978a3
sha256 0dbe6b3f38b4410e95c16de3fd96565ddecee3ed25655958673aea33ec270523
sha512 91793cb3548fdc705e351455e52c853f4069bafb35bad613345ccf9c661dc15a6b3b6468841f49e9721664800613c2866f95e6c84b834471a213b0a0d9e54e4b
ripemd-160 a17bcc4f252468fa422673569d18d531e9421a5e

21105840 as geometric shapes

Circle

Radius = n
Diameter 42211680
Circumference 132611903.78368
Area 1.3994428116769E+15

Sphere

Radius = n
Volume 3.9381888096537E+22
Surface area 5.5977712467076E+15
Circumference 132611903.78368

Square

Length = n
Perimeter 84423360
Area 445456482105600
Diagonal 29848165.173277

Cube

Length = n
Surface area 2672738892633600
Volume 9.4017332382837E+21
Space diagonal 36556387.21642

Equilateral Triangle

Length = n
Perimeter 63317520
Area 1.9288831489195E+14
Altitude 18278193.60821

Triangular Pyramid

Length = n
Surface area 1.9288831489195E+14
Volume 1.1080048879496E+21
Height 9949388.3910922