20981908 (number)

20981908 is an even 8-digits composite number following 20981907 and preceding 20981909. In scientific notation, it is written as 2.0981908 × 10^7. The sum of its digits is 37. It has a total of 4 prime factors and 12 positive divisors. There are 10468440 positive integers (up to 20981908) that are relatively prime to 20981908.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0981908 × 10^7
Engineering notation 2.0981908 × 10^6

Prime Factorization of 20981908

Prime Factorization 2 × 2 × 487 × 10771

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10490954
Product of the distinct prime numbers

The prime factorization of 20981908 is 2 × 2 × 487 × 10771. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 5, 97, 76, 236, 636, 8712, 1380, 65187, 6285, 393664, 551965, 8078318, 3899079, 49337360, 86757567, 335493079, 914416015, 431150793, 8395980033

Basic calculations (n = 20981908)

Multiplication

n×y
n×2 41963816
n×3 62945724
n×4 83927632
n×5 104909540

Division

n÷y
n÷2 10490954
n÷3 6993969.3333333
n÷3 5245477
n÷5 4196381.6

Exponentiation

ny
n2 440240463320464
n3 9.2370848992674E+21
n4 1.9381166554462E+29
n5 4.0665385357839E+36

Nth Root

y√n
2√n 4580.6012705757
3√n 275.81316557902
4√n 67.680139410138
5√n 29.131912422202

Divisors of 20981908

1, 2, 4, 487, 974, 1948, 10771, 21542, 43084, 5245477, 10490954, 20981908

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20981907
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20981908 can be divided by 12 positive divisors. The sum of these divisors (counting 20981908) is 1, the average is 0.083333333333333.

Base conversion 20981908

Base System Value
2 Binary 1010000000010100010010100
3 Ternary 1110110222202201
4 Quaternary 1100002202110
5 Quinary 20332410113
6 Senary 2025414244
8 Octal 120024224
10 Decimal 20981908
12 Duodecimal 703a384
16 Hexadecimal 1402894
20 Vigesimal 6b2ef8
36 Base36 chpqs

Cryptographic Hash Functions

md5 320a9c11dab662d0c7e2dfb939abffce
sha1 19dcf9c9ed4f0e1d3617643437afc0336a22d17d
sha256 5af09eadb7ad20fb23d9a0333a86b460c0ed97406b75955c126699c0f0cac5a3
sha512 449dddce1d13c68963176025d834091e1f74720672007bae0928e442d871cf87307b15b9b389a8e4899f0deeb4d1025a3ae32a405e2498931a0f3bee2c3fdb6a
ripemd-160 b05fa50c457a2a3f3a3b038ba279dab80c0f505b

20981908 as geometric shapes

Circle

Radius = n
Diameter 41963816
Circumference 131833216.06219
Area 1.3830562053805E+15

Sphere

Radius = n
Volume 3.8692210746831E+22
Surface area 5.5322248215221E+15
Circumference 131833216.06219

Square

Length = n
Perimeter 83927632
Area 440240463320464
Diagonal 29672898.858065

Cube

Length = n
Surface area 2641442779922784
Volume 9.2370848992674E+21
Space diagonal 36341730.695736

Equilateral Triangle

Length = n
Perimeter 62945724
Area 1.9062971250468E+14
Altitude 18170865.347868

Triangular Pyramid

Length = n
Surface area 1.9062971250468E+14
Volume 1.0886008951113E+21
Height 9890966.2860215