21687911 (number)

21687911 is an odd 8-digits composite number following 21687910 and preceding 21687912. In scientific notation, it is written as 2.1687911 × 10^7. The sum of its digits is 35. It has a total of 4 prime factors and 16 positive divisors. There are 17000928 positive integers (up to 21687911) that are relatively prime to 21687911.

Interesting facts

Basic properties

Name

Name twenty-one million six hundred eighty-seven thousand nine hundred eleven

Notation

Scientific notation 2.1687911 × 10^7
Engineering notation 2.1687911 × 10^6

Prime Factorization of 21687911

Prime Factorization 7 × 19 × 29 × 5623

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21687911
Product of the distinct prime numbers

The prime factorization of 21687911 is 7 × 19 × 29 × 5623. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 1, 2, 68, 535, 634, 6671, 6617, 82587, 41572, 74784, 428127, 6194762, 1275159, 35344622, 72208970, 98166250, 979107202, 9350066946, 8148489189

Basic calculations (n = 21687911)

Multiplication

n×y
n×2 43375822
n×3 65063733
n×4 86751644
n×5 108439555

Division

n÷y
n÷2 10843955.5
n÷3 7229303.6666667
n÷3 5421977.75
n÷5 4337582.2

Exponentiation

ny
n2 470365483543921
n3 1.0201244744573E+22
n4 2.2124368810951E+29
n5 4.7983134170307E+36

Nth Root

y√n
2√n 4657.0281296123
3√n 278.87263963452
4√n 68.242421774233
5√n 29.325372980025

Divisors of 21687911

1, 7, 19, 29, 133, 203, 551, 3857, 5623, 39361, 106837, 163067, 747859, 1141469, 3098273, 21687911

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 -21687910
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 21687911 can be divided by 16 positive divisors. The sum of these divisors (counting 21687911) is 1, the average is 0.0625.

Base conversion 21687911

Base System Value
2 Binary 1010010101110111001100111
3 Ternary 1111210212012222
4 Quaternary 1102232321213
5 Quinary 21023003121
6 Senary 2052502555
8 Octal 122567147
10 Decimal 21687911
12 Duodecimal 731aa5b
16 Hexadecimal 14aee67
20 Vigesimal 6fajfb
36 Base36 cwuhz

Cryptographic Hash Functions

md5 8f593a47faa0ab776d790663c3dc30b0
sha1 335b03ccef4e94cf4e083f81bfd5c31b73f91fc1
sha256 ca517c914c236a8d41b07806ef1e20de5cfc001b7ea7ad9d418041a700bcb271
sha512 96d5696467e90e5eb27713f827acdfa9382d62302d869e8fc231b16ab212034ffd514c3f25e5d66f2ee9fa735c0b6c817ef88da187577e75860f83276657307f
ripemd-160 13e09f25e829ec6d94ac8f369e6681927a291029

21687911 as geometric shapes

Circle

Radius = n
Diameter 43375822
Circumference 136269163.73862
Area 1.4776967476038E+15

Sphere

Radius = n
Volume 4.2730874062694E+22
Surface area 5.9107869904152E+15
Circumference 136269163.73862

Square

Length = n
Perimeter 86751644
Area 470365483543921
Diagonal 30671337.875741

Cube

Length = n
Surface area 2822192901263526
Volume 1.0201244744573E+22
Space diagonal 37564563.762032

Equilateral Triangle

Length = n
Perimeter 65063733
Area 2.0367422890619E+14
Altitude 18782281.881016

Triangular Pyramid

Length = n
Surface area 2.0367422890619E+14
Volume 1.2022282225718E+21
Height 10223779.291914