20721840 (number)

20721840 is an even 8-digits composite number following 20721839 and preceding 20721841. In scientific notation, it is written as 2.0721840 × 10^7. The sum of its digits is 24. It has a total of 7 prime factors and 40 positive divisors. There are 5525760 positive integers (up to 20721840) that are relatively prime to 20721840.

Interesting facts

Basic properties

Name

Name twenty million seven hundred twenty-one thousand eight hundred forty

Notation

Scientific notation 2.0721840 × 10^7
Engineering notation 2.0721840 × 10^6

Prime Factorization of 20721840

Prime Factorization 2 × 2 × 2 × 2 × 5 × 3 × 86341

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 2590230
Product of the distinct prime numbers

The prime factorization of 20721840 is 2 × 2 × 2 × 2 × 5 × 3 × 86341. Since it has a total of 7 prime factors.

Most popular turbo-numbers

5, 8, 93, 37, 137, 190, 1208, 5979, 84683, 3550, 371515, 222845, 8539991, 4512752, 85007500, 25581129, 397708566, 315258430, 9062542458, 6341632868

Basic calculations (n = 20721840)

Multiplication

n×y
n×2 41443680
n×3 62165520
n×4 82887360
n×5 103609200

Division

n÷y
n÷2 10360920
n÷3 6907280
n÷3 5180460
n÷5 4144368

Exponentiation

ny
n2 429394652985600
n3 8.8978472960231E+21
n4 1.8437976801262E+29
n5 3.8206880519947E+36

Nth Root

y√n
2√n 4552.1247786061
3√n 274.66886865779
4√n 67.469435884748
5√n 29.059334439415

Divisors of 20721840

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86341, 172682, 259023, 345364, 431705, 518046, 690728, 863410, 1036092, 1295115, 1381456, 1726820, 2072184, 2590230, 3453640, 4144368, 5180460, 6907280, 10360920, 20721840

40 divisors

τ Total Divisors 40
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20721839
Sum of the proper positive divisors of n
A Arithmetic Mean 0.025
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 40
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20721840 can be divided by 40 positive divisors. The sum of these divisors (counting 20721840) is 1, the average is 0.025.

Base conversion 20721840

Base System Value
2 Binary 1001111000011000010110000
3 Ternary 1102222210000120
4 Quaternary 1033003002300
5 Quinary 20301044330
6 Senary 2020050240
8 Octal 117030260
10 Decimal 20721840
12 Duodecimal 6b33980
16 Hexadecimal 13c30b0
20 Vigesimal 69a4c0
36 Base36 cc52o

Cryptographic Hash Functions

md5 d8cc87224b6bc2607b47a9d883dcf885
sha1 8705eb1edbc82828564ac7bdb2c65730f99129fd
sha256 bd189ed7984bfc5034be7c4b569d7ecc1b8a66995814f95afddba960f0a4dbb5
sha512 c388c80da523cccd4e1207c12f9d8f2f29eca32b794ea428c88498756194febf0ebbd7fe6d8ec84da7ac60e9855c8599c243ad934561a6daf58d6c7bb2fc9b74
ripemd-160 357c6876d183658bfa9392e7d59e2edcbe16ac25

20721840 as geometric shapes

Circle

Radius = n
Diameter 41443680
Circumference 130199160.62573
Area 1.3489830873103E+15

Sphere

Radius = n
Volume 3.7271215597267E+22
Surface area 5.3959323492412E+15
Circumference 130199160.62573

Square

Length = n
Perimeter 82887360
Area 429394652985600
Diagonal 29305107.165325

Cube

Length = n
Surface area 2576367917913600
Volume 8.8978472960231E+21
Space diagonal 35891279.706313

Equilateral Triangle

Length = n
Perimeter 62165520
Area 1.8593333886737E+14
Altitude 17945639.853157

Triangular Pyramid

Length = n
Surface area 1.8593333886737E+14
Volume 1.0486213601634E+21
Height 9768369.0551084