21388385 (number)

21388385 is an odd 8-digits composite number following 21388384 and preceding 21388386. In scientific notation, it is written as 2.1388385 × 10^7. The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors. There are 16820464 positive integers (up to 21388385) that are relatively prime to 21388385.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1388385 × 10^7
Engineering notation 2.1388385 × 10^6

Prime Factorization of 21388385

Prime Factorization 5 × 59 × 72503

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 21388385
Product of the distinct prime numbers

The prime factorization of 21388385 is 5 × 59 × 72503. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 6, 100, 99, 514, 507, 1202, 8326, 36665, 97466, 770383, 804807, 8529451, 5954366, 9929873, 80151231, 304941731, 956874492, 5217505655, 1613105692

Basic calculations (n = 21388385)

Multiplication

n×y
n×2 42776770
n×3 64165155
n×4 85553540
n×5 106941925

Division

n÷y
n÷2 10694192.5
n÷3 7129461.6666667
n÷3 5347096.25
n÷5 4277677

Exponentiation

ny
n2 457463012908225
n3 9.7843950433411E+21
n4 2.0927240817907E+29
n5 4.4759988360111E+36

Nth Root

y√n
2√n 4624.7578314978
3√n 277.58287165895
4√n 68.005572062132
5√n 29.24392076923

Divisors of 21388385

1, 5, 59, 295, 72503, 362515, 4277677, 21388385

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21388384
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21388385 can be divided by 8 positive divisors. The sum of these divisors (counting 21388385) is 1, the average is 0.125.

Base conversion 21388385

Base System Value
2 Binary 1010001100101110001100001
3 Ternary 1111020122100102
4 Quaternary 1101211301201
5 Quinary 20433412020
6 Senary 2042232145
8 Octal 121456141
10 Decimal 21388385
12 Duodecimal 71b5655
16 Hexadecimal 1465c61
20 Vigesimal 6ddaj5
36 Base36 cqfdt

Cryptographic Hash Functions

md5 d30a234820ee4bd7e73bafebb559019e
sha1 753f5028435c2fba8ad161dedb78eb2e009f181d
sha256 1a5d2e60535526eaf525d05608aebed049006fbcc0cdddd249ce8264a04d2398
sha512 f850f0b5fe3a18055d8803e1ff1e68eff0c27abe27345d2bc9bef8de8a7e7ede36473efe2ccaeac5876295cb4486470db0126562381151dd22e16817d4efe3d8
ripemd-160 5ae9947c2161ade07a8a3e1172034875be35f4f4

21388385 as geometric shapes

Circle

Radius = n
Diameter 42776770
Circumference 134387186.3763
Area 1.4371624406415E+15

Sphere

Radius = n
Volume 4.0984778117308E+22
Surface area 5.7486497625661E+15
Circumference 134387186.3763

Square

Length = n
Perimeter 85553540
Area 457463012908225
Diagonal 30247744.144257

Cube

Length = n
Surface area 2744778077449350
Volume 9.7843950433411E+21
Space diagonal 37045769.511844

Equilateral Triangle

Length = n
Perimeter 64165155
Area 1.9808729523515E+14
Altitude 18522884.755922

Triangular Pyramid

Length = n
Surface area 1.9808729523515E+14
Volume 1.1531020141591E+21
Height 10082581.381419