21087986 (number)

21087986 is an even 8-digits composite number following 21087985 and preceding 21087987. In scientific notation, it is written as 2.1087986 × 10^7. The sum of its digits is 41. It has a total of 4 prime factors and 16 positive divisors. There are 9947088 positive integers (up to 21087986) that are relatively prime to 21087986.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1087986 × 10^7
Engineering notation 2.1087986 × 10^6

Prime Factorization of 21087986

Prime Factorization 2 × 19 × 269 × 2063

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21087986
Product of the distinct prime numbers

The prime factorization of 21087986 is 2 × 19 × 269 × 2063. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 6, 31, 6, 965, 108, 3843, 7609, 79285, 67791, 860704, 793927, 9566968, 5949229, 18065466, 35912327, 719886268, 862692596, 3282815583, 7979677684

Basic calculations (n = 21087986)

Multiplication

n×y
n×2 42175972
n×3 63263958
n×4 84351944
n×5 105439930

Division

n÷y
n÷2 10543993
n÷3 7029328.6666667
n÷3 5271996.5
n÷5 4217597.2

Exponentiation

ny
n2 444703153536196
n3 9.3778938759272E+21
n4 1.9776089476504E+29
n5 4.1703789801526E+36

Nth Root

y√n
2√n 4592.1657200062
3√n 276.27719298525
4√n 67.765520141191
5√n 29.161309410776

Divisors of 21087986

1, 2, 19, 38, 269, 538, 2063, 4126, 5111, 10222, 39197, 78394, 554947, 1109894, 10543993, 21087986

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 -21087985
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 21087986 can be divided by 16 positive divisors. The sum of these divisors (counting 21087986) is 1, the average is 0.0625.

Base conversion 21087986

Base System Value
2 Binary 1010000011100011011110010
3 Ternary 1110200101021112
4 Quaternary 1100130123302
5 Quinary 20344303421
6 Senary 2031553322
8 Octal 120343362
10 Decimal 21087986
12 Duodecimal 708b842
16 Hexadecimal 141c6f2
20 Vigesimal 6bfjj6
36 Base36 cjzle

Cryptographic Hash Functions

md5 52c0ea5d5bf6c1f93775e7a958c3980b
sha1 dfa9dfe209a69e597cba047f77db7608f112ae57
sha256 2593933f51ebbd487199726d184ce6a2454e71a7234d6f2851407380f2ae95ab
sha512 0bf6a69c7f46d34dc8d4b86f7bac1cc6780895335e4d65f2e1f969f418bf5ed3dee9296d76e36dcaf0d8743981cb5da40e9a2e7ecc28790954a19961f0d531e3
ripemd-160 8043ce20ce8e271cb12fbb82e6be8af3bbed9672

21087986 as geometric shapes

Circle

Radius = n
Diameter 42175972
Circumference 132499723.79321
Area 1.3970761601775E+15

Sphere

Radius = n
Volume 3.928203000901E+22
Surface area 5.5883046407101E+15
Circumference 132499723.79321

Square

Length = n
Perimeter 84351944
Area 444703153536196
Diagonal 29822915.804334

Cube

Length = n
Surface area 2668218921217176
Volume 9.3778938759272E+21
Space diagonal 36525463.181301

Equilateral Triangle

Length = n
Perimeter 63263958
Area 1.925621140527E+14
Altitude 18262731.590651

Triangular Pyramid

Length = n
Surface area 1.925621140527E+14
Volume 1.1051953921526E+21
Height 9940971.934778