20921840 (number)

20921840 is an even 8-digits composite number following 20921839 and preceding 20921841. In scientific notation, it is written as 2.0921840 × 10^7. The sum of its digits is 26. It has a total of 6 prime factors and 20 positive divisors. There are 8368704 positive integers (up to 20921840) that are relatively prime to 20921840.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0921840 × 10^7
Engineering notation 2.0921840 × 10^6

Prime Factorization of 20921840

Prime Factorization 2 × 2 × 2 × 2 × 5 × 261523

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2615230
Product of the distinct prime numbers

The prime factorization of 20921840 is 2 × 2 × 2 × 2 × 5 × 261523. Since it has a total of 6 prime factors.

Most popular turbo-numbers

5, 10, 14, 76, 223, 572, 7620, 5306, 23822, 73578, 11701, 682217, 1926963, 2136869, 65208992, 28805216, 562375824, 289011193, 9873926620, 3246006770

Basic calculations (n = 20921840)

Multiplication

n×y
n×2 41843680
n×3 62765520
n×4 83687360
n×5 104609200

Division

n÷y
n÷2 10460920
n÷3 6973946.6666667
n÷3 5230460
n÷5 4184368

Exponentiation

ny
n2 437723388985600
n3 9.1579787086145E+21
n4 1.9160176526504E+29
n5 4.0086614765927E+36

Nth Root

y√n
2√n 4574.039789945
3√n 275.5497103435
4√n 67.631647842892
5√n 29.115213244624

Divisors of 20921840

1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 261523, 523046, 1046092, 1307615, 2092184, 2615230, 4184368, 5230460, 10460920, 20921840

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20921839
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20921840 can be divided by 20 positive divisors. The sum of these divisors (counting 20921840) is 1, the average is 0.05.

Base conversion 20921840

Base System Value
2 Binary 1001111110011110111110000
3 Ternary 1110100221100222
4 Quaternary 1033303313300
5 Quinary 20323444330
6 Senary 2024232212
8 Octal 117636760
10 Decimal 20921840
12 Duodecimal 700b668
16 Hexadecimal 13f3df0
20 Vigesimal 6af4c0
36 Base36 cgfe8

Cryptographic Hash Functions

md5 3ddb832aaa728ea30d3b7a12ff19ab42
sha1 4caff689535814acf5ee5b26e696ae91321f5f4b
sha256 2d6f669f3db8f23e734889e4fac73d918cd9b711341a8ed1c3981833b5afba7f
sha512 1ea23035b6f56761964e68fd9d06f8c972eec366caee225657f3d6712bf131a6196d77ff54e56dab92141b8a910368fe3c815d9ab8c1349efee649f3f9ff335f
ripemd-160 cb83908c2160a7cf00d62f58467c069f2cc6a697

20921840 as geometric shapes

Circle

Radius = n
Diameter 41843680
Circumference 131455797.68716
Area 1.3751485831416E+15

Sphere

Radius = n
Volume 3.8360851510287E+22
Surface area 5.5005943325664E+15
Circumference 131455797.68716

Square

Length = n
Perimeter 83687360
Area 437723388985600
Diagonal 29587949.8778

Cube

Length = n
Surface area 2626340333913600
Volume 9.1579787086145E+21
Space diagonal 36237689.867827

Equilateral Triangle

Length = n
Perimeter 62765520
Area 1.8953978734607E+14
Altitude 18118844.933913

Triangular Pyramid

Length = n
Surface area 1.8953978734607E+14
Volume 1.0792781411372E+21
Height 9862649.9592666