21556821 (number)

21556821 is an odd 8-digits composite number following 21556820 and preceding 21556822. In scientific notation, it is written as 2.1556821 × 10^7. The sum of its digits is 30. It has a total of 5 prime factors and 32 positive divisors. There are 11923200 positive integers (up to 21556821) that are relatively prime to 21556821.

Interesting facts

Basic properties

Name

Name twenty-one million five hundred fifty-six thousand eight hundred twenty-one

Notation

Scientific notation 2.1556821 × 10^7
Engineering notation 2.1556821 × 10^6

Prime Factorization of 21556821

Prime Factorization 13 × 3 × 11 × 109 × 461

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 21556821
Product of the distinct prime numbers

The prime factorization of 21556821 is 13 × 3 × 11 × 109 × 461. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 10, 80, 68, 570, 156, 3573, 2006, 98007, 50820, 55875, 611932, 8574172, 7403691, 72981467, 91133157, 669000686, 150783899, 101674858, 3801287389

Basic calculations (n = 21556821)

Multiplication

n×y
n×2 43113642
n×3 64670463
n×4 86227284
n×5 107784105

Division

n÷y
n÷2 10778410.5
n÷3 7185607
n÷3 5389205.25
n÷5 4311364.2

Exponentiation

ny
n2 464696531626041
n3 1.0017379951583E+22
n4 2.1594286650527E+29
n5 4.655041719481E+36

Nth Root

y√n
2√n 4642.9323708191
3√n 278.30963292363
4√n 68.139066407011
5√n 29.289836210518

Divisors of 21556821

1, 3, 11, 13, 33, 39, 109, 143, 327, 429, 461, 1199, 1383, 1417, 3597, 4251, 5071, 5993, 15213, 15587, 17979, 46761, 50249, 65923, 150747, 197769, 552739, 653237, 1658217, 1959711, 7185607, 21556821

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 -21556820
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 21556821 can be divided by 32 positive divisors. The sum of these divisors (counting 21556821) is 1, the average is 0.03125.

Base conversion 21556821

Base System Value
2 Binary 1010010001110111001010101
3 Ternary 1111120012101210
4 Quaternary 1102032321111
5 Quinary 21004304241
6 Senary 2050012033
8 Octal 122167125
10 Decimal 21556821
12 Duodecimal 7277019
16 Hexadecimal 148ee55
20 Vigesimal 6eec11
36 Base36 cu1cl

Cryptographic Hash Functions

md5 7c6dc53037ff677bd4d80af15a142f0a
sha1 ee2d2f7511e716c8d7bb596288b0f2c18eba40c2
sha256 104969369b49d11ca2cfe959b9b2018fa2d50ecd4d4db23b352952d65362159d
sha512 67504b23024bad61a1e396bf745f67e26369aeba7e35d4af9bb8b6ed21aa26c40c6452e8f35ad55805d13c9320fdea75b5bd6308706f7e19dbf73a18fd74f85f
ripemd-160 2f002ae4955f525441a5b6d0390cff5a2d6d1a68

21556821 as geometric shapes

Circle

Radius = n
Diameter 43113642
Circumference 135445500.9767
Area 1.459887209905E+15

Sphere

Radius = n
Volume 4.1960703018816E+22
Surface area 5.8395488396201E+15
Circumference 135445500.9767

Square

Length = n
Perimeter 86227284
Area 464696531626041
Diagonal 30485948.619849

Cube

Length = n
Surface area 2788179189756246
Volume 1.0017379951583E+22
Space diagonal 37337509.221668

Equilateral Triangle

Length = n
Perimeter 64670463
Area 2.0121950071934E+14
Altitude 18668754.610834

Triangular Pyramid

Length = n
Surface area 2.0121950071934E+14
Volume 1.1805595489145E+21
Height 10161982.873283