21091388 (number)

21091388 is an even 8-digits composite number following 21091387 and preceding 21091389. In scientific notation, it is written as 2.1091388 × 10^7. The sum of its digits is 32. It has a total of 4 prime factors and 12 positive divisors. There are 10506240 positive integers (up to 21091388) that are relatively prime to 21091388.

Interesting facts

Basic properties

Name

Name twenty-one million ninety-one thousand three hundred eighty-eight

Notation

Scientific notation 2.1091388 × 10^7
Engineering notation 2.1091388 × 10^6

Prime Factorization of 21091388

Prime Factorization 2 × 2 × 271 × 19457

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 10545694
Product of the distinct prime numbers

The prime factorization of 21091388 is 2 × 2 × 271 × 19457. Since it has a total of 4 prime factors.

Most popular turbo-numbers

1, 9, 13, 44, 296, 617, 961, 2938, 30471, 42387, 794966, 925089, 3326305, 1515934, 88598083, 76278574, 197246900, 805992963, 8447829245, 5513502273

Basic calculations (n = 21091388)

Multiplication

n×y
n×2 42182776
n×3 63274164
n×4 84365552
n×5 105456940

Division

n÷y
n÷2 10545694
n÷3 7030462.6666667
n÷3 5272847
n÷5 4218277.6

Exponentiation

ny
n2 444846647766544
n3 9.3824332485435E+21
n4 1.9788854002913E+29
n5 4.1737439785079E+36

Nth Root

y√n
2√n 4592.5361185297
3√n 276.292048908
4√n 67.768253028462
5√n 29.162250234366

Divisors of 21091388

1, 2, 4, 271, 542, 1084, 19457, 38914, 77828, 5272847, 10545694, 21091388

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 -21091387
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 21091388 can be divided by 12 positive divisors. The sum of these divisors (counting 21091388) is 1, the average is 0.083333333333333.

Base conversion 21091388

Base System Value
2 Binary 1010000011101010000111100
3 Ternary 1110200112221112
4 Quaternary 1100131100330
5 Quinary 20344411023
6 Senary 2032021152
8 Octal 120352074
10 Decimal 21091388
12 Duodecimal 70917b8
16 Hexadecimal 141d43c
20 Vigesimal 6bg898
36 Base36 ck27w

Cryptographic Hash Functions

md5 84de072ecbb486df4edcac1544a02684
sha1 bf6ba7420726939363a188d89185a76cace438bd
sha256 4603b80838822bceb1a30a9428a8556612bcb43429ac57ff5a8bc3748982c076
sha512 51ca2eeff5ef33c81bf218fff78ab4ba50dfdf95e8d614dd4c1727a3ee68ed83283361f92d31b9943c924b2d8b770a82ceec2493082eaf801b423668c1be1f62
ripemd-160 315e7c26301f90747f40743fd3f1142842a3b3b8

21091388 as geometric shapes

Circle

Radius = n
Diameter 42182776
Circumference 132521099.18962
Area 1.3975269605974E+15

Sphere

Radius = n
Volume 3.9301044488561E+22
Surface area 5.5901078423897E+15
Circumference 132521099.18962

Square

Length = n
Perimeter 84365552
Area 444846647766544
Diagonal 29827726.958873

Cube

Length = n
Surface area 2669079886599264
Volume 9.3824332485435E+21
Space diagonal 36531355.618149

Equilateral Triangle

Length = n
Perimeter 63274164
Area 1.9262424887709E+14
Altitude 18265677.809074

Triangular Pyramid

Length = n
Surface area 1.9262424887709E+14
Volume 1.1057303623459E+21
Height 9942575.6529577