21981844 (number)

21981844 is an even 8-digits composite number following 21981843 and preceding 21981845. In scientific notation, it is written as 2.1981844 × 10^7. The sum of its digits is 37. It has a total of 4 prime factors and 12 positive divisors. There are 10977624 positive integers (up to 21981844) that are relatively prime to 21981844.

Interesting facts

Basic properties

Name

Name twenty-one million nine hundred eighty-one thousand eight hundred forty-four

Notation

Scientific notation 2.1981844 × 10^7
Engineering notation 2.1981844 × 10^6

Prime Factorization of 21981844

Prime Factorization 2 × 2 × 967 × 5683

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10990922
Product of the distinct prime numbers

The prime factorization of 21981844 is 2 × 2 × 967 × 5683. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 3, 51, 64, 373, 355, 8852, 1042, 69706, 50705, 607387, 459517, 2952445, 2591609, 91942414, 66003808, 329127764, 391729856, 6517088180, 8042055884

Basic calculations (n = 21981844)

Multiplication

n×y
n×2 43963688
n×3 65945532
n×4 87927376
n×5 109909220

Division

n÷y
n÷2 10990922
n÷3 7327281.3333333
n÷3 5495461
n÷5 4396368.8

Exponentiation

ny
n2 483201465640336
n3 1.0621659238277E+22
n4 2.3348365639697E+29
n5 5.1324013114678E+36

Nth Root

y√n
2√n 4688.4799242398
3√n 280.1268302967
4√n 68.472475668986
5√n 29.404434008073

Divisors of 21981844

1, 2, 4, 967, 1934, 3868, 5683, 11366, 22732, 5495461, 10990922, 21981844

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 -21981843
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 21981844 can be divided by 12 positive divisors. The sum of these divisors (counting 21981844) is 1, the average is 0.083333333333333.

Base conversion 21981844

Base System Value
2 Binary 1010011110110101010010100
3 Ternary 1112100210102101
4 Quaternary 1103312222110
5 Quinary 21111404334
6 Senary 2103051444
8 Octal 123665224
10 Decimal 21981844
12 Duodecimal 7440b84
16 Hexadecimal 14f6a94
20 Vigesimal 6h7ec4
36 Base36 d35as

Cryptographic Hash Functions

md5 4343031cbc282ae95911adefea4ada20
sha1 6f383f0918aa31b9fbebe884c1f060339991bfb6
sha256 b79e9451c4037717094e943e4ab1f45868d66e473f742bae643d3ecea4b5d027
sha512 0fb993ea79b83f739c12ffd6b3f937a37a697ad4bad639d0357781271419832b9c1aaf503261bd010f7a68b59fa6601a3b4e7398b20c4d802c29542854844d59
ripemd-160 7b5daa246833f4d82997b9187b58772b5d93e596

21981844 as geometric shapes

Circle

Radius = n
Diameter 43963688
Circumference 138115999.24551
Area 1.5180221746595E+15

Sphere

Radius = n
Volume 4.4491902175875E+22
Surface area 6.072088698638E+15
Circumference 138115999.24551

Square

Length = n
Perimeter 87927376
Area 483201465640336
Diagonal 31087021.91077

Cube

Length = n
Surface area 2899208793842016
Volume 1.0621659238277E+22
Space diagonal 38073670.652053

Equilateral Triangle

Length = n
Perimeter 65945532
Area 2.092323721952E+14
Altitude 19036835.326027

Triangular Pyramid

Length = n
Surface area 2.092323721952E+14
Volume 1.2517745458064E+21
Height 10362340.636923