20991688 (number)

20991688 is an even 8-digits composite number following 20991687 and preceding 20991689. In scientific notation, it is written as 2.0991688 × 10^7. The sum of its digits is 43. It has a total of 6 prime factors and 32 positive divisors. There are 10264192 positive integers (up to 20991688) that are relatively prime to 20991688.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0991688 × 10^7
Engineering notation 2.0991688 × 10^6

Prime Factorization of 20991688

Prime Factorization 2 × 2 × 2 × 107 × 137 × 179

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 5247922
Product of the distinct prime numbers

The prime factorization of 20991688 is 2 × 2 × 2 × 107 × 137 × 179. Since it has a total of 6 prime factors.

Most popular turbo-numbers

2, 2, 32, 28, 522, 686, 5231, 3398, 69837, 52906, 264738, 850787, 2811165, 4033412, 65984265, 68023999, 317558205, 441147408, 4805837861, 2228428048

Basic calculations (n = 20991688)

Multiplication

n×y
n×2 41983376
n×3 62975064
n×4 83966752
n×5 104958440

Division

n÷y
n÷2 10495844
n÷3 6997229.3333333
n÷3 5247922
n÷5 4198337.6

Exponentiation

ny
n2 440650965089344
n3 9.2500075760544E+21
n4 1.9417327303417E+29
n5 4.0760247654721E+36

Nth Root

y√n
2√n 4581.668691645
3√n 275.85601255238
4√n 67.688024728492
5√n 29.134627685255

Divisors of 20991688

1, 2, 4, 8, 107, 137, 179, 214, 274, 358, 428, 548, 716, 856, 1096, 1432, 14659, 19153, 24523, 29318, 38306, 49046, 58636, 76612, 98092, 117272, 153224, 196184, 2623961, 5247922, 10495844, 20991688

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 -20991687
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 20991688 can be divided by 32 positive divisors. The sum of these divisors (counting 20991688) is 1, the average is 0.03125.

Base conversion 20991688

Base System Value
2 Binary 1010000000100111011001000
3 Ternary 1110111111011221
4 Quaternary 1100010323020
5 Quinary 20333213223
6 Senary 2025531424
8 Octal 120047310
10 Decimal 20991688
12 Duodecimal 7043b74
16 Hexadecimal 1404ec8
20 Vigesimal 6b3j48
36 Base36 chxag

Cryptographic Hash Functions

md5 d4c19c1cd67da686fa1d53bc4bab6732
sha1 054efaf4e261fe2f8dfec16e7a62a72cdb538964
sha256 ef5d57d2417c07f1ee99ace0ad878bd2056869b1b6b8956118271a81a4e27e28
sha512 acc6a5a6ccd546c63a10746a76423e25e2a995586b142bf574526d913ece5810402678cccf881178b0df2f3965ebfb5c262a0d52374dbd42755f79a05bc56a74
ripemd-160 165043ad05ccb563259eaa6239dc219ace08b9d2

20991688 as geometric shapes

Circle

Radius = n
Diameter 41983376
Circumference 131894665.6145
Area 1.3843458347219E+15

Sphere

Radius = n
Volume 3.8746341128777E+22
Surface area 5.5373833388877E+15
Circumference 131894665.6145

Square

Length = n
Perimeter 83966752
Area 440650965089344
Diagonal 29686729.866705

Cube

Length = n
Surface area 2643905790536064
Volume 9.2500075760544E+21
Space diagonal 36358670.152634

Equilateral Triangle

Length = n
Perimeter 62975064
Area 1.9080746498475E+14
Altitude 18179335.076317

Triangular Pyramid

Length = n
Surface area 1.9080746498475E+14
Volume 1.0901238471758E+21
Height 9895576.6222349