21686872 (number)

21686872 is an even 8-digits composite number following 21686871 and preceding 21686873. In scientific notation, it is written as 2.1686872 × 10^7. The sum of its digits is 40. It has a total of 5 prime factors and 16 positive divisors. There are 10731264 positive integers (up to 21686872) that are relatively prime to 21686872.

Interesting facts

Basic properties

Name

Name twenty-one million six hundred eighty-six thousand eight hundred seventy-two

Notation

Scientific notation 2.1686872 × 10^7
Engineering notation 2.1686872 × 10^6

Prime Factorization of 21686872

Prime Factorization 2 × 2 × 2 × 97 × 27947

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 5421718
Product of the distinct prime numbers

The prime factorization of 21686872 is 2 × 2 × 2 × 97 × 27947. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 5, 15, 60, 388, 758, 9547, 9269, 80990, 29026, 260203, 923861, 2808321, 2846524, 43438062, 3843879, 309979720, 890781149, 6556441942, 6458003948

Basic calculations (n = 21686872)

Multiplication

n×y
n×2 43373744
n×3 65060616
n×4 86747488
n×5 108434360

Division

n÷y
n÷2 10843436
n÷3 7228957.3333333
n÷3 5421718
n÷5 4337374.4

Exponentiation

ny
n2 470320417144384
n3 1.0199778685597E+22
n4 2.2120129478287E+29
n5 4.7971641661903E+36

Nth Root

y√n
2√n 4656.9165764484
3√n 278.86818625801
4√n 68.241604439289
5√n 29.325091997256

Divisors of 21686872

1, 2, 4, 8, 97, 194, 388, 776, 27947, 55894, 111788, 223576, 2710859, 5421718, 10843436, 21686872

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 -21686871
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 21686872 can be divided by 16 positive divisors. The sum of these divisors (counting 21686872) is 1, the average is 0.0625.

Base conversion 21686872

Base System Value
2 Binary 1010010101110101001011000
3 Ternary 1111210210210111
4 Quaternary 1102232221120
5 Quinary 21022434442
6 Senary 2052454104
8 Octal 122565130
10 Decimal 21686872
12 Duodecimal 731a334
16 Hexadecimal 14aea58
20 Vigesimal 6fah3c
36 Base36 cwtp4

Cryptographic Hash Functions

md5 b42fb4720818d7cf7d2eba51d74a6ab5
sha1 26d5827aa91b109ed87c1d4a281030af393c0ef8
sha256 d77cbc879e8db18c42b27b8a20282759ca4ff6a760d78090c458a27b7129d168
sha512 a2a00dca48207053fbbe8412dd14d3af6ddc028aa491ce16f8b1f316e7a6482c57fc47fd93be9417998cb81b55ff9b4392bcb218f775c121fa845f45c951159a
ripemd-160 c54dd015fbc2c5daab278ea3a3b81b7bb26bd60e

21686872 as geometric shapes

Circle

Radius = n
Diameter 43373744
Circumference 136262635.50908
Area 1.4775551673341E+15

Sphere

Radius = n
Volume 4.2724733049217E+22
Surface area 5.9102206693363E+15
Circumference 136262635.50908

Square

Length = n
Perimeter 86747488
Area 470320417144384
Diagonal 30669868.507849

Cube

Length = n
Surface area 2821922502866304
Volume 1.0199778685597E+22
Space diagonal 37562764.161243

Equilateral Triangle

Length = n
Perimeter 65060616
Area 2.0365471458277E+14
Altitude 18781382.080621

Triangular Pyramid

Length = n
Surface area 2.0365471458277E+14
Volume 1.2020554458646E+21
Height 10223289.502616