20191221 (number)

20191221 is an odd 8-digits composite number following 20191220 and preceding 20191222. In scientific notation, it is written as 2.0191221 × 10^7. The sum of its digits is 18. It has a total of 5 prime factors and 32 positive divisors. There are 12821760 positive integers (up to 20191221) that are relatively prime to 20191221.

Interesting facts

Basic properties

Name

Name twenty million one hundred ninety-one thousand two hundred twenty-one

Notation

Scientific notation 2.0191221 × 10^7
Engineering notation 2.0191221 × 10^6

Prime Factorization of 20191221

Prime Factorization 3 × 9 × 29 × 241 × 107

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20191221
Product of the distinct prime numbers

The prime factorization of 20191221 is 3 × 9 × 29 × 241 × 107. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 3, 47, 58, 45, 372, 6988, 6335, 94570, 20340, 256740, 327999, 3223870, 3878062, 40514111, 22835092, 820677491, 121649324, 2100552152, 8096972043

Basic calculations (n = 20191221)

Multiplication

n×y
n×2 40382442
n×3 60573663
n×4 80764884
n×5 100956105

Division

n÷y
n÷2 10095610.5
n÷3 6730407
n÷3 5047805.25
n÷5 4038244.2

Exponentiation

ny
n2 407685405470841
n3 8.2316661203364E+21
n4 1.6620738983392E+29
n5 3.3559301399699E+36

Nth Root

y√n
2√n 4493.4642537802
3√n 272.30410857547
4√n 67.033307047916
5√n 28.908963212335

Divisors of 20191221

1, 3, 9, 27, 29, 87, 107, 241, 261, 321, 723, 783, 963, 2169, 2889, 3103, 6507, 6989, 9309, 20967, 25787, 27927, 62901, 77361, 83781, 188703, 232083, 696249, 747823, 2243469, 6730407, 20191221

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 -20191220
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 20191221 can be divided by 32 positive divisors. The sum of these divisors (counting 20191221) is 1, the average is 0.03125.

Base conversion 20191221

Base System Value
2 Binary 1001101000001011111110101
3 Ternary 1101222211011000
4 Quaternary 1031001133311
5 Quinary 20132104341
6 Senary 2000433513
8 Octal 115013765
10 Decimal 20191221
12 Duodecimal 6918899
16 Hexadecimal 13417f5
20 Vigesimal 663i11
36 Base36 c0rn9

Cryptographic Hash Functions

md5 606f61b17b52c6f86295e3608e6f0ee4
sha1 2300bb9fdcb0989d3004368bc4b74723a7d8418f
sha256 2f8631aaf930ba375e2e86332ad163966285927605689be3d63cd1ca1e24bb01
sha512 84ea21a18523ccf376fff1d764563bacf5b52c8ff69b276eee9e7fdc92f8abb7b4b3a103f54e9ab7879fb0d8e865164f372c4750fa6949ec405ecc541502048d
ripemd-160 c2a789d86c8bdd89f9ef451f4157306bca35ea69

20191221 as geometric shapes

Circle

Radius = n
Diameter 40382442
Circumference 126865183.12122
Area 1.280781474803E+15

Sphere

Radius = n
Volume 3.4480722413937E+22
Surface area 5.1231258992119E+15
Circumference 126865183.12122

Square

Length = n
Perimeter 80764884
Area 407685405470841
Diagonal 28554698.579072

Cube

Length = n
Surface area 2446112432825046
Volume 8.2316661203364E+21
Space diagonal 34972220.638852

Equilateral Triangle

Length = n
Perimeter 60573663
Area 1.7653295894495E+14
Altitude 17486110.319426

Triangular Pyramid

Length = n
Surface area 1.7653295894495E+14
Volume 9.7011115569223E+20
Height 9518232.8596908