20921890 (number)

20921890 is an even 8-digits composite number following 20921889 and preceding 20921891. In scientific notation, it is written as 2.0921890 × 10^7. The sum of its digits is 31. It has a total of 5 prime factors and 32 positive divisors. There are 7420800 positive integers (up to 20921890) that are relatively prime to 20921890.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0921890 × 10^7
Engineering notation 2.0921890 × 10^6

Prime Factorization of 20921890

Prime Factorization 2 × 11 × 5 × 41 × 4639

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20921890
Product of the distinct prime numbers

The prime factorization of 20921890 is 2 × 11 × 5 × 41 × 4639. Since it has a total of 5 prime factors.

Most popular turbo-numbers

6, 2, 9, 89, 923, 626, 8548, 1512, 32860, 66548, 298484, 574293, 1431096, 386320, 91874823, 94390106, 192482961, 641228216, 4380564889, 6554342885

Basic calculations (n = 20921890)

Multiplication

n×y
n×2 41843780
n×3 62765670
n×4 83687560
n×5 104609450

Division

n÷y
n÷2 10460945
n÷3 6973963.3333333
n÷3 5230472.5
n÷5 4184378

Exponentiation

ny
n2 437725481172100
n3 9.1580443672797E+21
n4 1.9160359686735E+29
n5 4.008709377263E+36

Nth Root

y√n
2√n 4574.0452555697
3√n 275.54992985056
4√n 67.631688250181
5√n 29.115227160792

Divisors of 20921890

1, 2, 5, 10, 11, 22, 41, 55, 82, 110, 205, 410, 451, 902, 2255, 4510, 4639, 9278, 23195, 46390, 51029, 102058, 190199, 255145, 380398, 510290, 950995, 1901990, 2092189, 4184378, 10460945, 20921890

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 -20921889
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 20921890 can be divided by 32 positive divisors. The sum of these divisors (counting 20921890) is 1, the average is 0.03125.

Base conversion 20921890

Base System Value
2 Binary 1001111110011111000100010
3 Ternary 1110100221102211
4 Quaternary 1033303320202
5 Quinary 20324000030
6 Senary 2024232334
8 Octal 117637042
10 Decimal 20921890
12 Duodecimal 700b6aa
16 Hexadecimal 13f3e22
20 Vigesimal 6af4ea
36 Base36 cgffm

Cryptographic Hash Functions

md5 eaf33f96432a766297463e591c54584b
sha1 6a76d2be676ab9bbeb0d1386c6d389c0174135ef
sha256 b61dbef4de9605ae22b03874d4ecf46d9ce219f9a7b6ea67d08aaeecf4cc2149
sha512 5fd6e33fe1879bb2d2f2963fd871040b045c859c0cc77878172c3196fe743776d02ca9994427df8e5a8d0d4ebff5f944b964aa3f8add83b6648217d889507579
ripemd-160 f256fb9997cd02cb96348179e453153e491f7dc4

20921890 as geometric shapes

Circle

Radius = n
Diameter 41843780
Circumference 131456111.84643
Area 1.3751551559393E+15

Sphere

Radius = n
Volume 3.8361126540661E+22
Surface area 5.5006206237573E+15
Circumference 131456111.84643

Square

Length = n
Perimeter 83687560
Area 437725481172100
Diagonal 29588020.588478

Cube

Length = n
Surface area 2626352887032600
Volume 9.1580443672797E+21
Space diagonal 36237776.470367

Equilateral Triangle

Length = n
Perimeter 62765670
Area 1.895406932894E+14
Altitude 18118888.235184

Triangular Pyramid

Length = n
Surface area 1.895406932894E+14
Volume 1.0792858790851E+21
Height 9862673.5294927