20921971 (number)

20921971 is an odd 8-digits composite number following 20921970 and preceding 20921972. In scientific notation, it is written as 2.0921971 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 17781120 positive integers (up to 20921971) that are relatively prime to 20921971.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0921971 × 10^7
Engineering notation 2.0921971 × 10^6

Prime Factorization of 20921971

Prime Factorization 7 × 49 × 181 × 337

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20921971
Product of the distinct prime numbers

The prime factorization of 20921971 is 7 × 49 × 181 × 337. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 8, 5, 85, 864, 731, 9906, 5065, 67599, 74805, 707264, 506974, 2969667, 7626977, 54228782, 4402673, 177182077, 490589680, 329289800, 4046364292

Basic calculations (n = 20921971)

Multiplication

n×y
n×2 41843942
n×3 62765913
n×4 83687884
n×5 104609855

Division

n÷y
n÷2 10460985.5
n÷3 6973990.3333333
n÷3 5230492.75
n÷5 4184394.2

Exponentiation

ny
n2 437728870524841
n3 9.1581507349835E+21
n4 1.9160656409095E+29
n5 4.0087869773206E+36

Nth Root

y√n
2√n 4574.054109868
3√n 275.55028545125
4√n 67.631753709836
5√n 29.115249704929

Divisors of 20921971

1, 7, 49, 181, 337, 343, 1267, 2359, 8869, 16513, 60997, 62083, 115591, 426979, 2988853, 20921971

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20921970
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20921971 can be divided by 16 positive divisors. The sum of these divisors (counting 20921971) is 1, the average is 0.0625.

Base conversion 20921971

Base System Value
2 Binary 1001111110011111001110011
3 Ternary 1110100221112211
4 Quaternary 1033303321303
5 Quinary 20324000341
6 Senary 2024232551
8 Octal 117637163
10 Decimal 20921971
12 Duodecimal 700b757
16 Hexadecimal 13f3e73
20 Vigesimal 6af4ib
36 Base36 cgfhv

Cryptographic Hash Functions

md5 6eec441af8270905b165274f545f9417
sha1 2d6be1eae67d53523a6794834eddb5f07201d2bf
sha256 c1097838bf96f37413a2b570873fc58d30df2eae1e5e35aa63ae2f0073f780a0
sha512 5127ca854f46095ca4e9ce3b5d2fb70fd07479243b5cde80578aafdbfdc40f6c4570448672a6bdd6f46ba66ac8a8ec02e5c1a66c885a3c26378c921f37d806c5
ripemd-160 f0093cde9dbf472151765fa73956ab9cb405c81c

20921971 as geometric shapes

Circle

Radius = n
Diameter 41843942
Circumference 131456620.78444
Area 1.375165803905E+15

Sphere

Radius = n
Volume 3.8361572092656E+22
Surface area 5.50066321562E+15
Circumference 131456620.78444

Square

Length = n
Perimeter 83687884
Area 437728870524841
Diagonal 29588135.139777

Cube

Length = n
Surface area 2626373223149046
Volume 9.1581507349835E+21
Space diagonal 36237916.766483

Equilateral Triangle

Length = n
Perimeter 62765913
Area 1.8954216092219E+14
Altitude 18118958.383241

Triangular Pyramid

Length = n
Surface area 1.8954216092219E+14
Volume 1.0792984146392E+21
Height 9862711.7132589