20405890 (number)

20405890 is an even 8-digits composite number following 20405889 and preceding 20405891. In scientific notation, it is written as 2.0405890 × 10^7. The sum of its digits is 28. It has a total of 5 prime factors and 32 positive divisors. There are 7962624 positive integers (up to 20405890) that are relatively prime to 20405890.

Interesting facts

Basic properties

Name

Name twenty million four hundred five thousand eight hundred ninety

Notation

Scientific notation 2.0405890 × 10^7
Engineering notation 2.0405890 × 10^6

Prime Factorization of 20405890

Prime Factorization 2 × 5 × 193 × 97 × 109

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20405890
Product of the distinct prime numbers

The prime factorization of 20405890 is 2 × 5 × 193 × 97 × 109. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 10, 65, 84, 149, 806, 9981, 4681, 70109, 53368, 651913, 323533, 341142, 8689744, 44322103, 14955940, 170323058, 629247508, 8540766766, 3069513473

Basic calculations (n = 20405890)

Multiplication

n×y
n×2 40811780
n×3 61217670
n×4 81623560
n×5 102029450

Division

n÷y
n÷2 10202945
n÷3 6801963.3333333
n÷3 5101472.5
n÷5 4081178

Exponentiation

ny
n2 416400346692100
n3 8.4970196705609E+21
n4 1.733892487253E+29
n5 3.5381619366711E+36

Nth Root

y√n
2√n 4517.2879031561
3√n 273.26573614288
4√n 67.21077222556
5√n 28.970174305628

Divisors of 20405890

1, 2, 5, 10, 97, 109, 193, 194, 218, 386, 485, 545, 965, 970, 1090, 1930, 10573, 18721, 21037, 21146, 37442, 42074, 52865, 93605, 105185, 105730, 187210, 210370, 2040589, 4081178, 10202945, 20405890

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20405889
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20405890 can be divided by 32 positive divisors. The sum of these divisors (counting 20405890) is 1, the average is 0.03125.

Base conversion 20405890

Base System Value
2 Binary 1001101110101111010000010
3 Ternary 1102101201121201
4 Quaternary 1031311322002
5 Quinary 20210442030
6 Senary 2005211414
8 Octal 115657202
10 Decimal 20405890
12 Duodecimal 6a00b6a
16 Hexadecimal 1375e82
20 Vigesimal 67aeea
36 Base36 c5daa

Cryptographic Hash Functions

md5 14ea3982f2d057a119545ee743524077
sha1 166cfa5bfbdedbc35b8d63a653e90d26e927471d
sha256 693ded0191977ce83e7c278d7490d01a94d6ce5ef90c957f14896401bdc8b5ed
sha512 e1cd78d33c26573088ef72b6fcb67aa7918522e332ed94ca73ab8e95ad12e411c0900c5d8a695ffafba6693b413d95ff01e0c6993d47320019ccbf9da63a4efc
ripemd-160 28ead9719f05bc72c850e3bebfcc3c7e4a921b81

20405890 as geometric shapes

Circle

Radius = n
Diameter 40811780
Circumference 128213988.22792
Area 1.3081602701201E+15

Sphere

Radius = n
Volume 3.5592232765923E+22
Surface area 5.2326410804806E+15
Circumference 128213988.22792

Square

Length = n
Perimeter 81623560
Area 416400346692100
Diagonal 28858286.390294

Cube

Length = n
Surface area 2498402080152600
Volume 8.4970196705609E+21
Space diagonal 35344038.253662

Equilateral Triangle

Length = n
Perimeter 61217670
Area 1.8030663919E+14
Altitude 17672019.126831

Triangular Pyramid

Length = n
Surface area 1.8030663919E+14
Volume 1.0013833714882E+21
Height 9619428.7967645