21493728 (number)

21493728 is an even 8-digits composite number following 21493727 and preceding 21493729. In scientific notation, it is written as 2.1493728 × 10^7. The sum of its digits is 36. It has a total of 8 prime factors and 48 positive divisors. There are 7164288 positive integers (up to 21493728) that are relatively prime to 21493728.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-three thousand seven hundred twenty-eight

Notation

Scientific notation 2.1493728 × 10^7
Engineering notation 2.1493728 × 10^6

Prime Factorization of 21493728

Prime Factorization 2 × 2 × 2 × 2 × 2 × 3 × 9 × 24877

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 1343358
Product of the distinct prime numbers

The prime factorization of 21493728 is 2 × 2 × 2 × 2 × 2 × 3 × 9 × 24877. Since it has a total of 8 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21493728)

Multiplication

n×y
n×2 42987456
n×3 64481184
n×4 85974912
n×5 107468640

Division

n÷y
n÷2 10746864
n÷3 7164576
n÷3 5373432
n÷5 4298745.6

Exponentiation

ny
n2 461980343337984
n3 9.9296798410532E+21
n4 2.1342583763068E+29
n5 4.587316902206E+36

Nth Root

y√n
2√n 4636.1328712624
3√n 278.03784658038
4√n 68.089153844518
5√n 29.27267086938

Divisors of 21493728

48 divisors

τ Total Divisors 48
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21493727
Sum of the proper positive divisors of n
A Arithmetic Mean 0.020833333333333
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 48
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21493728 can be divided by 48 positive divisors. The sum of these divisors (counting 21493728) is 1, the average is 0.020833333333333.

Base conversion 21493728

Base System Value
2 Binary 1010001111111011111100000
3 Ternary 1111102222212000
4 Quaternary 1101333133200
5 Quinary 21000244403
6 Senary 2044404000
8 Octal 121773740
10 Decimal 21493728
12 Duodecimal 7246600
16 Hexadecimal 147f7e0
20 Vigesimal 6e6e68
36 Base36 csoo0

Cryptographic Hash Functions

md5 4565fd7c5a01a29fbbe0cd7f55b5bf07
sha1 0175aeeca94976af300169d5af92ab6526bb2476
sha256 e65f36bf303d2fa30e963235dd2bc6e761d7e01bf25422f8cfb4f3fd5789be4a
sha512 76c92c5f3545b3a3ee899c0f86641d58f6165ae9e22a6d88a9928c83c2a3103acdb92081e51a23142bbd078202ea4b826f42912f6f04c56b1da255df46d11ca0
ripemd-160 a5cca1d6f6d8931614ef76eda9141f151e5ff0f1

21493728 as geometric shapes

Circle

Radius = n
Diameter 42987456
Circumference 135049075.96611
Area 1.4513540527335E+15

Sphere

Radius = n
Volume 4.1593345654869E+22
Surface area 5.805416210934E+15
Circumference 135049075.96611

Square

Length = n
Perimeter 85974912
Area 461980343337984
Diagonal 30396721.643558

Cube

Length = n
Surface area 2771882060027904
Volume 9.9296798410532E+21
Space diagonal 37228228.940066

Equilateral Triangle

Length = n
Perimeter 64481184
Area 2.0004335668988E+14
Altitude 18614114.470033

Triangular Pyramid

Length = n
Surface area 2.0004335668988E+14
Volume 1.17022399177E+21
Height 10132240.547853