21287968 (number)

21287968 is an even 8-digits composite number following 21287967 and preceding 21287969. In scientific notation, it is written as 2.1287968 × 10^7. The sum of its digits is 43. It has a total of 8 prime factors and 48 positive divisors. There are 9676800 positive integers (up to 21287968) that are relatively prime to 21287968.

Interesting facts

Basic properties

Name

Name twenty-one million two hundred eighty-seven thousand nine hundred sixty-eight

Notation

Scientific notation 2.1287968 × 10^7
Engineering notation 2.1287968 × 10^6

Prime Factorization of 21287968

Prime Factorization 2 × 2 × 2 × 2 × 2 × 13 × 73 × 701

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 1330498
Product of the distinct prime numbers

The prime factorization of 21287968 is 2 × 2 × 2 × 2 × 2 × 13 × 73 × 701. Since it has a total of 8 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21287968)

Multiplication

n×y
n×2 42575936
n×3 63863904
n×4 85151872
n×5 106439840

Division

n÷y
n÷2 10643984
n÷3 7095989.3333333
n÷3 5321992
n÷5 4257593.6

Exponentiation

ny
n2 453177581569024
n3 9.6472298547588E+21
n4 2.0536992043675E+29
n5 4.3719082944201E+36

Nth Root

y√n
2√n 4613.8885985685
3√n 277.14777919179
4√n 67.925610770669
5√n 29.216409414749

Divisors of 21287968

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 -21287967
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 21287968 can be divided by 48 positive divisors. The sum of these divisors (counting 21287968) is 1, the average is 0.020833333333333.

Base conversion 21287968

Base System Value
2 Binary 1010001001101010000100000
3 Ternary 1111001112121021
4 Quaternary 1101031100200
5 Quinary 20422203333
6 Senary 2040135224
8 Octal 121152040
10 Decimal 21287968
12 Duodecimal 7167514
16 Hexadecimal 144d420
20 Vigesimal 6d0ji8
36 Base36 co9wg

Cryptographic Hash Functions

md5 50fc90d38a78eb2736e378eda991c70d
sha1 4b669af7c06e4387be49488fb37e952c67e304b3
sha256 619e495c85e75e0f378f35f8424924df6ef4c5c4b8aa4650a59a14fc7b3aa453
sha512 143ad03aa45689d6b1d6a6b1242a43d40c508f5a7459f75f6cec9ffd4b51800d8c8f73598b68d2aea16d389144a34ebb455d770f72db8d00475a04504741c2cb
ripemd-160 6a902e386fabacb01d6b754e260e51e592581c37

21287968 as geometric shapes

Circle

Radius = n
Diameter 42575936
Circumference 133756247.75731
Area 1.4236993610288E+15

Sphere

Radius = n
Volume 4.0410221918936E+22
Surface area 5.6947974441153E+15
Circumference 133756247.75731

Square

Length = n
Perimeter 85151872
Area 453177581569024
Diagonal 30105733.060964

Cube

Length = n
Surface area 2719065489414144
Volume 9.6472298547588E+21
Space diagonal 36871842.1659

Equilateral Triangle

Length = n
Perimeter 63863904
Area 1.9623164903218E+14
Altitude 18435921.08295

Triangular Pyramid

Length = n
Surface area 1.9623164903218E+14
Volume 1.1369369416609E+21
Height 10035244.353655