20781220 (number)

20781220 is an even 8-digits composite number following 20781219 and preceding 20781221. In scientific notation, it is written as 2.0781220 × 10^7. The sum of its digits is 22. It has a total of 5 prime factors and 24 positive divisors. There are 8294400 positive integers (up to 20781220) that are relatively prime to 20781220.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0781220 × 10^7
Engineering notation 2.0781220 × 10^6

Prime Factorization of 20781220

Prime Factorization 2 × 2 × 5 × 641 × 1621

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 10390610
Product of the distinct prime numbers

The prime factorization of 20781220 is 2 × 2 × 5 × 641 × 1621. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 1, 28, 70, 393, 319, 5252, 8239, 15635, 54867, 761916, 759264, 3771746, 9535313, 18617827, 5929000, 458684518, 918893973, 8453409395, 5152797510

Basic calculations (n = 20781220)

Multiplication

n×y
n×2 41562440
n×3 62343660
n×4 83124880
n×5 103906100

Division

n÷y
n÷2 10390610
n÷3 6927073.3333333
n÷3 5195305
n÷5 4156244

Exponentiation

ny
n2 431859104688400
n3 8.9745590635327E+21
n4 1.8650228630227E+29
n5 3.8757450421504E+36

Nth Root

y√n
2√n 4558.6423417504
3√n 274.93097992382
4√n 67.517718724424
5√n 29.075969726657

Divisors of 20781220

1, 2, 4, 5, 10, 20, 641, 1282, 1621, 2564, 3205, 3242, 6410, 6484, 8105, 12820, 16210, 32420, 1039061, 2078122, 4156244, 5195305, 10390610, 20781220

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 -20781219
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 20781220 can be divided by 24 positive divisors. The sum of these divisors (counting 20781220) is 1, the average is 0.041666666666667.

Base conversion 20781220

Base System Value
2 Binary 1001111010001100010100100
3 Ternary 1110002210110211
4 Quaternary 1033101202210
5 Quinary 20304444340
6 Senary 2021225204
8 Octal 117214244
10 Decimal 20781220
12 Duodecimal 6b62204
16 Hexadecimal 13d18a4
20 Vigesimal 69hd10
36 Base36 cdew4

Cryptographic Hash Functions

md5 aaccbe7323f6c06d2b0dd09162384451
sha1 4a99819b4bfdb7ed3d4283dc514f3bfd724b7787
sha256 0aa6c6ca2fbdadb5f482b8a06c7a14adcaa496d00becdeb86e5aa442d3719e03
sha512 37b3b772f9b62e72aba4fd8299f6a4aab43906bcb51d345c67eb1b44d8af26f73fdd68c8affd35f990cffb52a11d90ad76cb10f998a0250b4805be855afea2bf
ripemd-160 11ec72b76f45fba477fd2f52d875ddfafdd064a8

20781220 as geometric shapes

Circle

Radius = n
Diameter 41562440
Circumference 130572256.16927
Area 1.3567253906749E+15

Sphere

Radius = n
Volume 3.7592545097603E+22
Surface area 5.4269015626998E+15
Circumference 130572256.16927

Square

Length = n
Perimeter 83124880
Area 431859104688400
Diagonal 29389083.166659

Cube

Length = n
Surface area 2591154628130400
Volume 8.9745590635327E+21
Space diagonal 35994128.883267

Equilateral Triangle

Length = n
Perimeter 62343660
Area 1.8700047775788E+14
Altitude 17997064.441633

Triangular Pyramid

Length = n
Surface area 1.8700047775788E+14
Volume 1.0576619286639E+21
Height 9796361.055553