21909820 (number)

21909820 is an even 8-digits composite number following 21909819 and preceding 21909821. In scientific notation, it is written as 2.1909820 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 12 positive divisors. There are 8763920 positive integers (up to 21909820) that are relatively prime to 21909820.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1909820 × 10^7
Engineering notation 2.1909820 × 10^6

Prime Factorization of 21909820

Prime Factorization 2 × 2 × 5 × 1095491

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10954910
Product of the distinct prime numbers

The prime factorization of 21909820 is 2 × 2 × 5 × 1095491. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 2, 30, 42, 958, 658, 5259, 9318, 76061, 61504, 31003, 944281, 8370354, 9536716, 54938632, 28603453, 761825545, 19944046, 5827881164, 8863320362

Basic calculations (n = 21909820)

Multiplication

n×y
n×2 43819640
n×3 65729460
n×4 87639280
n×5 109549100

Division

n÷y
n÷2 10954910
n÷3 7303273.3333333
n÷3 5477455
n÷5 4381964

Exponentiation

ny
n2 480040212432400
n3 1.0517594647156E+22
n4 2.3043860555214E+29
n5 5.0488683686985E+36

Nth Root

y√n
2√n 4680.7926679143
3√n 279.82054827945
4√n 68.416318725245
5√n 29.385139848179

Divisors of 21909820

1, 2, 4, 5, 10, 20, 1095491, 2190982, 4381964, 5477455, 10954910, 21909820

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 -21909819
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 21909820 can be divided by 12 positive divisors. The sum of these divisors (counting 21909820) is 1, the average is 0.083333333333333.

Base conversion 21909820

Base System Value
2 Binary 1010011100101000100111100
3 Ternary 1112020010121211
4 Quaternary 1103211010330
5 Quinary 21102103240
6 Senary 2101334204
8 Octal 123450474
10 Decimal 21909820
12 Duodecimal 7407364
16 Hexadecimal 14e513c
20 Vigesimal 6gieb0
36 Base36 d1lq4

Cryptographic Hash Functions

md5 640f8657f5fe86dd81cd5b7e2fc6eef3
sha1 ce4bf0ecd68f26bc6a47b63343d870b6b3ff738f
sha256 e151a2c3d7d2cd594f16977df0feb44b7385d0cc88b29f76dab5652e7935b6aa
sha512 d376b319bb16c2b7eba4b8341c4b0c520349c88a41118c14261164f45c21dc42348d12a78339f489a138585cdda36eed1431033014da692c78643e1c44bfca73
ripemd-160 1c5756c250ef45c3557c599df1c058e0faa8d203

21909820 as geometric shapes

Circle

Radius = n
Diameter 43819640
Circumference 137663459.10695
Area 1.5080908048053E+15

Sphere

Radius = n
Volume 4.4055997435919E+22
Surface area 6.0323632192212E+15
Circumference 137663459.10695

Square

Length = n
Perimeter 87639280
Area 480040212432400
Diagonal 30985164.593153

Cube

Length = n
Surface area 2880241274594400
Volume 1.0517594647156E+22
Space diagonal 37948921.424689

Equilateral Triangle

Length = n
Perimeter 65729460
Area 2.0786350940227E+14
Altitude 18974460.712344

Triangular Pyramid

Length = n
Surface area 2.0786350940227E+14
Volume 1.2395104161292E+21
Height 10328388.197718