20781388 (number)

20781388 is an even 8-digits composite number following 20781387 and preceding 20781389. In scientific notation, it is written as 2.0781388 × 10^7. The sum of its digits is 37. It has a total of 4 prime factors and 12 positive divisors. There are 10375520 positive integers (up to 20781388) that are relatively prime to 20781388.

Interesting facts

Basic properties

Name

Name twenty million seven hundred eighty-one thousand three hundred eighty-eight

Notation

Scientific notation 2.0781388 × 10^7
Engineering notation 2.0781388 × 10^6

Prime Factorization of 20781388

Prime Factorization 2 × 2 × 761 × 6827

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10390694
Product of the distinct prime numbers

The prime factorization of 20781388 is 2 × 2 × 761 × 6827. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 8, 8, 99, 604, 251, 5008, 6835, 50292, 87349, 196704, 891477, 2819651, 4118212, 40818286, 28023283, 753499725, 235124297, 66289146, 6713579663

Basic calculations (n = 20781388)

Multiplication

n×y
n×2 41562776
n×3 62344164
n×4 83125552
n×5 103906940

Division

n÷y
n÷2 10390694
n÷3 6927129.3333333
n÷3 5195347
n÷5 4156277.6

Exponentiation

ny
n2 431866087206544
n3 8.974776722281E+21
n4 1.8650831727909E+29
n5 3.8759017066039E+36

Nth Root

y√n
2√n 4558.660768252
3√n 274.93172078954
4√n 67.517855181071
5√n 29.076016737825

Divisors of 20781388

1, 2, 4, 761, 1522, 3044, 6827, 13654, 27308, 5195347, 10390694, 20781388

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20781387
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20781388 can be divided by 12 positive divisors. The sum of these divisors (counting 20781388) is 1, the average is 0.083333333333333.

Base conversion 20781388

Base System Value
2 Binary 1001111010001100101001100
3 Ternary 1110002210201001
4 Quaternary 1033101211030
5 Quinary 20310001023
6 Senary 2021230044
8 Octal 117214514
10 Decimal 20781388
12 Duodecimal 6b62324
16 Hexadecimal 13d194c
20 Vigesimal 69hd98
36 Base36 cdf0s

Cryptographic Hash Functions

md5 652e7d3594d738d168aa1aca292d871e
sha1 fadd13af6fae5ca2008d5045b95dcedcc9377533
sha256 e47eb356ae8b667c2a9f925287bfd81e5f7868e8e1b2823afc8f42a10e535a9d
sha512 c337390df8d6e885300384aae589882e2fd5a2e68c7e6b32f6c84b3f5e515a0002b1c50c27c7523699c310147e684897c96f9006ed6f9e4d35302746e8072a74
ripemd-160 13007fe0918b99a0b5815a967f06e714e05bdd71

20781388 as geometric shapes

Circle

Radius = n
Diameter 41562776
Circumference 130573311.7444
Area 1.3567473269026E+15

Sphere

Radius = n
Volume 3.7593456824436E+22
Surface area 5.4269893076106E+15
Circumference 130573311.7444

Square

Length = n
Perimeter 83125552
Area 431866087206544
Diagonal 29389320.754537

Cube

Length = n
Surface area 2591196523239264
Volume 8.974776722281E+21
Space diagonal 35994419.867802

Equilateral Triangle

Length = n
Perimeter 62344164
Area 1.8700350127693E+14
Altitude 17997209.933901

Triangular Pyramid

Length = n
Surface area 1.8700350127693E+14
Volume 1.0576875799933E+21
Height 9796440.2515125