20921978 (number)

20921978 is an even 8-digits composite number following 20921977 and preceding 20921979. In scientific notation, it is written as 2.0921978 × 10^7. The sum of its digits is 38. It has a total of 5 prime factors and 32 positive divisors. There are 8066160 positive integers (up to 20921978) that are relatively prime to 20921978.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0921978 × 10^7
Engineering notation 2.0921978 × 10^6

Prime Factorization of 20921978

Prime Factorization 2 × 7 × 11 × 103 × 1319

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20921978
Product of the distinct prime numbers

The prime factorization of 20921978 is 2 × 7 × 11 × 103 × 1319. Since it has a total of 5 prime factors.

Most popular turbo-numbers

10, 3, 39, 46, 66, 197, 7204, 1018, 43290, 54504, 641130, 599482, 989604, 3021933, 72688611, 74288529, 844035230, 203667030, 8940563513, 1555995242

Basic calculations (n = 20921978)

Multiplication

n×y
n×2 41843956
n×3 62765934
n×4 83687912
n×5 104609890

Division

n÷y
n÷2 10460989
n÷3 6973992.6666667
n÷3 5230494.5
n÷5 4184395.6

Exponentiation

ny
n2 437729163432484
n3 9.1581599272928E+21
n4 1.916068205193E+29
n5 4.0087936835548E+36

Nth Root

y√n
2√n 4574.0548750534
3√n 275.55031618213
4√n 67.631759366835
5√n 29.115251653185

Divisors of 20921978

1, 2, 7, 11, 14, 22, 77, 103, 154, 206, 721, 1133, 1319, 1442, 2266, 2638, 7931, 9233, 14509, 15862, 18466, 29018, 101563, 135857, 203126, 271714, 950999, 1494427, 1901998, 2988854, 10460989, 20921978

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 -20921977
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 20921978 can be divided by 32 positive divisors. The sum of these divisors (counting 20921978) is 1, the average is 0.03125.

Base conversion 20921978

Base System Value
2 Binary 1001111110011111001111010
3 Ternary 1110100221120002
4 Quaternary 1033303321322
5 Quinary 20324000403
6 Senary 2024233002
8 Octal 117637172
10 Decimal 20921978
12 Duodecimal 700b762
16 Hexadecimal 13f3e7a
20 Vigesimal 6af4ii
36 Base36 cgfi2

Cryptographic Hash Functions

md5 bf6a7ce240abe73e1642a8b2bc964fd1
sha1 a971258f8df8d4b67504c6203b3e3d7ecb157133
sha256 62beea10bf5c65adcb6a59dcdd04516f5eed248b9ee3a0569c502d5a91a6833a
sha512 a0c1b0c354afea0d940a59e75cab521baaa02d64ae103e7818de1fc4f44143cd0d45db83b4ccef727cfafa14aea7dbf9657b354f2f7ac6fcd2fb0cceadbdf92a
ripemd-160 07a1b71afe9ba973fe86023a1d031678cf3ec3f7

20921978 as geometric shapes

Circle

Radius = n
Diameter 41843956
Circumference 131456664.76673
Area 1.3751667241015E+15

Sphere

Radius = n
Volume 3.8361610597311E+22
Surface area 5.500666896406E+15
Circumference 131456664.76673

Square

Length = n
Perimeter 83687912
Area 437729163432484
Diagonal 29588145.039272

Cube

Length = n
Surface area 2626374980594904
Volume 9.1581599272928E+21
Space diagonal 36237928.890838

Equilateral Triangle

Length = n
Perimeter 62765934
Area 1.8954228775492E+14
Altitude 18118964.445419

Triangular Pyramid

Length = n
Surface area 1.8954228775492E+14
Volume 1.0792994979633E+21
Height 9862715.0130905