Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

20121809 (number)

20121809 is an odd 8-digits composite number following 20121808 and preceding 20121810. In scientific notation, it is written as 2.0121809 × 10^7. The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors. There are 20106660 positive integers (up to 20121809) that are relatively prime to 20121809.

Interesting facts

20121809 has 4 divisors, whose sum is 20136960
The reverse of 20121809 is 90812102
Previous prime number is 13679

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5

Name

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

Notation

Scientific notation	2.0121809 × 10^7
Engineering notation	2.0121809 × 10^6

Prime Factorization of 20121809

Prime Factorization 13679 × 1471

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20121809	Product of the distinct prime numbers

The prime factorization of 20121809 is 13679 × 1471. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 7, 11, 15, 708, 264, 9906, 6034, 82284, 49270, 210873, 256667, 7402969, 8490236, 70297976, 20010756, 745940732, 172480345, 9848703180, 9771107503

Basic calculations (n = 20121809)

Multiplication

n×y

n×2	40243618
n×3	60365427
n×4	80487236
n×5	100609045

Division

n÷y

n÷2	10060904.5
n÷3	6707269.6666667
n÷3	5030452.25
n÷5	4024361.8

Exponentiation

n^y

n²	404887197432481
n³	8.1470628532817E+21
n⁴	1.6393364264473E+29
n⁵	3.2986414459715E+36

Nth Root

^y√n

²√n	4485.7339421771
³√n	271.99171417234
⁴√n	66.975621999181
⁵√n	28.889059572427

Divisors of 20121809

1, 1471, 13679, 20121809

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-20121808	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20121809 can be divided by 4 positive divisors. The sum of these divisors (counting 20121809) is 1, the average is 0.25.

Base conversion 20121809

Base	System	Value
2	Binary	1001100110000100011010001
3	Ternary	1101212021221012
4	Quaternary	1030300203101
5	Quinary	20122344214
6	Senary	1555140305
8	Octal	114604321
10	Decimal	20121809
12	Duodecimal	68a4695
16	Hexadecimal	13308d1
20	Vigesimal	65f4a9
36	Base36	bza35

Cryptographic Hash Functions

md5	3e12df2b9cb3589c16edaedacb91bcab
sha1	bcb6f32a4ed8c7b6cbc2b8f16618a93ffa5e1181
sha256	7cf54dad892cf7075caf189fa62f539cf1670b4c95bb1551119bb4c4decb9f9d
sha512	91db322909c90586d8fd9c14b2815822dedda0ebc282ce4150be463fc2d0a420492f1e225eb5ed440068c268adfd9af249f1a0754e09fe57af7abc32254a2326
ripemd-160	287aca6a228eb22d50b975396f43e0b40dabce29

20121809 as geometric shapes

Circle

Radius = n

Diameter	40243618
Circumference	126429054.66267
Area	1.2719906449864E+15

Sphere

Radius = n

Volume	3.4126337077605E+22
Surface area	5.0879625799458E+15
Circumference	126429054.66267

Square

Length = n

Perimeter	80487236
Area	404887197432481
Diagonal	28456535.187281

Cube

Length = n

Surface area	2429323184594886
Volume	8.1470628532817E+21
Space diagonal	34851995.528197

Equilateral Triangle

Length = n

Perimeter	60365427
Area	1.7532129932181E+14
Altitude	17425997.764098

Triangular Pyramid

Length = n

Surface area	1.7532129932181E+14
Volume	9.6014056505142E+20
Height	9485511.7290937