21291215 (number)

21291215 is an odd 8-digits composite number following 21291214 and preceding 21291216. In scientific notation, it is written as 2.1291215 × 10^7. The sum of its digits is 23. It has a total of 4 prime factors and 16 positive divisors. There are 14810400 positive integers (up to 21291215) that are relatively prime to 21291215.

Interesting facts

Basic properties

Name

Name twenty-one million two hundred ninety-one thousand two hundred fifteen

Notation

Scientific notation 2.1291215 × 10^7
Engineering notation 2.1291215 × 10^6

Prime Factorization of 21291215

Prime Factorization 5 × 11 × 23 × 16831

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21291215
Product of the distinct prime numbers

The prime factorization of 21291215 is 5 × 11 × 23 × 16831. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 5, 54, 34, 600, 14, 6793, 4153, 20539, 36869, 45559, 719521, 9404379, 5249619, 23011283, 58359100, 560919152, 280160017, 6177036775, 7780651104

Basic calculations (n = 21291215)

Multiplication

n×y
n×2 42582430
n×3 63873645
n×4 85164860
n×5 106456075

Division

n÷y
n÷2 10645607.5
n÷3 7097071.6666667
n÷3 5322803.75
n÷5 4258243

Exponentiation

ny
n2 453315836176225
n3 9.6516449309328E+21
n4 2.0549524732815E+29
n5 4.3752434923418E+36

Nth Root

y√n
2√n 4614.2404575401
3√n 277.16186935906
4√n 67.928200753002
5√n 29.217300621406

Divisors of 21291215

1, 5, 11, 23, 55, 115, 253, 1265, 16831, 84155, 185141, 387113, 925705, 1935565, 4258243, 21291215

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 -21291214
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 21291215 can be divided by 16 positive divisors. The sum of these divisors (counting 21291215) is 1, the average is 0.0625.

Base conversion 21291215

Base System Value
2 Binary 1010001001110000011001111
3 Ternary 1111001201001112
4 Quaternary 1101032003033
5 Quinary 20422304330
6 Senary 2040202235
8 Octal 121160317
10 Decimal 21291215
12 Duodecimal 716937b
16 Hexadecimal 144e0cf
20 Vigesimal 6d180f
36 Base36 cocen

Cryptographic Hash Functions

md5 87a7c851709972d81f477d5b94c4e02d
sha1 c26371ec351c753ed16f21cb5ea0423666987ff4
sha256 2a78f5aa9a59ffcd2e89f1683323be39550719bc256b9aa671dc322929c5d9b4
sha512 047320b2978eef169b76f7747f80da4830f99b4cc6da0c02371c396c9069a97d56eafecf518f0451b263af63d2e9d81847f5d183c9ac42db1c7d4b03a02ebd96
ripemd-160 24af6315f084d3e97e64b4a06374f97019dd1dc8

21291215 as geometric shapes

Circle

Radius = n
Diameter 42582430
Circumference 133776649.26
Area 1.4241337006871E+15

Sphere

Radius = n
Volume 4.0428715746767E+22
Surface area 5.6965348027486E+15
Circumference 133776649.26

Square

Length = n
Perimeter 85164860
Area 453315836176225
Diagonal 30110325.012401

Cube

Length = n
Surface area 2719895017057350
Volume 9.6516449309328E+21
Space diagonal 36877466.134873

Equilateral Triangle

Length = n
Perimeter 63873645
Area 1.962915150332E+14
Altitude 18438733.067436

Triangular Pyramid

Length = n
Surface area 1.962915150332E+14
Volume 1.1374572633779E+21
Height 10036775.004134