20998905 (number)

20998905 is an odd 8-digits composite number following 20998904 and preceding 20998906. In scientific notation, it is written as 2.0998905 × 10^7. The sum of its digits is 42. It has a total of 4 prime factors and 16 positive divisors. There are 11173760 positive integers (up to 20998905) that are relatively prime to 20998905.

Interesting facts

Basic properties

Name

Name twenty million nine hundred ninety-eight thousand nine hundred five

Notation

Scientific notation 2.0998905 × 10^7
Engineering notation 2.0998905 × 10^6

Prime Factorization of 20998905

Prime Factorization 3 × 5 × 2687 × 521

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20998905
Product of the distinct prime numbers

The prime factorization of 20998905 is 3 × 5 × 2687 × 521. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 8, 71, 31, 375, 587, 4985, 2561, 76525, 58142, 195045, 64289, 5292230, 5290711, 65224246, 33490813, 876893813, 584027757, 9911101985, 8380822084

Basic calculations (n = 20998905)

Multiplication

n×y
n×2 41997810
n×3 62996715
n×4 83995620
n×5 104994525

Division

n÷y
n÷2 10499452.5
n÷3 6999635
n÷3 5249726.25
n÷5 4199781

Exponentiation

ny
n2 440954011199025
n3 9.2595513905373E+21
n4 1.9444043999251E+29
n5 4.0830363275609E+36

Nth Root

y√n
2√n 4582.4562191035
3√n 275.88762228179
4√n 67.693841810784
5√n 29.136630722821

Divisors of 20998905

1, 3, 5, 15, 521, 1563, 2605, 2687, 7815, 8061, 13435, 40305, 1399927, 4199781, 6999635, 20998905

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 -20998904
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 20998905 can be divided by 16 positive divisors. The sum of these divisors (counting 20998905) is 1, the average is 0.0625.

Base conversion 20998905

Base System Value
2 Binary 1010000000110101011111001
3 Ternary 1110111212002020
4 Quaternary 1100012223321
5 Quinary 20333431110
6 Senary 2030025053
8 Octal 120065371
10 Decimal 20998905
12 Duodecimal 7048189
16 Hexadecimal 1406af9
20 Vigesimal 6b4h55
36 Base36 ci2ux

Cryptographic Hash Functions

md5 7635e03a014d0194533b2369540ab8d5
sha1 c10a773fca9a1527a1dffdd1519ddf0eb451f309
sha256 6d512fcf178a68798533ef5f933ce62f9e86badf903e200bd8fec3bd0ab21a12
sha512 1b484e4ed1c96d044e287ca205f670202196fe7bf6492c32989facecc6562f9506e3b948f7b4fbc6090159e96cbb2d90aae1b49d9a26718fc28c507538fb32aa
ripemd-160 4967c866a4fe9500a0304d33d0bfd27f5ead70ed

20998905 as geometric shapes

Circle

Radius = n
Diameter 41997810
Circumference 131940011.36286
Area 1.3852978821538E+15

Sphere

Radius = n
Volume 3.8786318165399E+22
Surface area 5.5411915286152E+15
Circumference 131940011.36286

Square

Length = n
Perimeter 83995620
Area 440954011199025
Diagonal 29696936.245984

Cube

Length = n
Surface area 2645724067194150
Volume 9.2595513905373E+21
Space diagonal 36371170.363312

Equilateral Triangle

Length = n
Perimeter 62996715
Area 1.909386877995E+14
Altitude 18185585.181656

Triangular Pyramid

Length = n
Surface area 1.909386877995E+14
Volume 1.091248596499E+21
Height 9898978.7486614