21087788 (number)

21087788 is an even 8-digits composite number following 21087787 and preceding 21087789. In scientific notation, it is written as 2.1087788 × 10^7. The sum of its digits is 41. It has a total of 4 prime factors and 12 positive divisors. There are 10516800 positive integers (up to 21087788) that are relatively prime to 21087788.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1087788 × 10^7
Engineering notation 2.1087788 × 10^6

Prime Factorization of 21087788

Prime Factorization 2 × 2 × 401 × 13147

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10543894
Product of the distinct prime numbers

The prime factorization of 21087788 is 2 × 2 × 401 × 13147. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 8, 1, 88, 843, 552, 3821, 5279, 84332, 99599, 437581, 795031, 4011029, 8393124, 30987219, 67713795, 113156644, 825064636, 9835406320, 1877960565

Basic calculations (n = 21087788)

Multiplication

n×y
n×2 42175576
n×3 63263364
n×4 84351152
n×5 105438940

Division

n÷y
n÷2 10543894
n÷3 7029262.6666667
n÷3 5271947
n÷5 4217557.6

Exponentiation

ny
n2 444694802732944
n3 9.3776297247341E+21
n4 1.9775346757769E+29
n5 4.1701832005432E+36

Nth Root

y√n
2√n 4592.1441615002
3√n 276.27632830563
4√n 67.765361074078
5√n 29.161254650109

Divisors of 21087788

1, 2, 4, 401, 802, 1604, 13147, 26294, 52588, 5271947, 10543894, 21087788

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 -21087787
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 21087788 can be divided by 12 positive divisors. The sum of these divisors (counting 21087788) is 1, the average is 0.083333333333333.

Base conversion 21087788

Base System Value
2 Binary 1010000011100011000101100
3 Ternary 1110200101000012
4 Quaternary 1100130120230
5 Quinary 20344302123
6 Senary 2031552352
8 Octal 120343054
10 Decimal 21087788
12 Duodecimal 708b6b8
16 Hexadecimal 141c62c
20 Vigesimal 6bfj98
36 Base36 cjzfw

Cryptographic Hash Functions

md5 4fa30777c0925aa68591d78dd2b67617
sha1 e5462341ae0bdfcd529aaa41ce68a2c341937a14
sha256 211c2c0975a2481d13514a8dbe7a1922d428efcd43cd8f268ef0c41ab591c1e2
sha512 3562fc0b106d3bdf4d528f999e64720cfa0dd45d6a6a6fcfdf77534e84a6c3525c2ced1fe28dc4b2c7b1e3d3f57e98953d23cd103b3b1dbdde948dd9b165138b
ripemd-160 b28193d90c69b68e3c65fab097b3cdc74a5d443d

21087788 as geometric shapes

Circle

Radius = n
Diameter 42175576
Circumference 132498479.72252
Area 1.3970499253554E+15

Sphere

Radius = n
Volume 3.928092353508E+22
Surface area 5.5881997014215E+15
Circumference 132498479.72252

Square

Length = n
Perimeter 84351152
Area 444694802732944
Diagonal 29822635.790049

Cube

Length = n
Surface area 2668168816397664
Volume 9.3776297247341E+21
Space diagonal 36525120.235241

Equilateral Triangle

Length = n
Perimeter 63263364
Area 1.9255849804882E+14
Altitude 18262560.117621

Triangular Pyramid

Length = n
Surface area 1.9255849804882E+14
Volume 1.105164261636E+21
Height 9940878.5966829