21491680 (number)

21491680 is an even 8-digits composite number following 21491679 and preceding 21491681. In scientific notation, it is written as 2.1491680 × 10^7. The sum of its digits is 31. It has a total of 8 prime factors and 48 positive divisors. There are 7119360 positive integers (up to 21491680) that are relatively prime to 21491680.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand six hundred eighty

Notation

Scientific notation 2.1491680 × 10^7
Engineering notation 2.1491680 × 10^6

Prime Factorization of 21491680

Prime Factorization 2 × 2 × 2 × 2 × 2 × 35 × 31 × 619

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 8
Total number of prime factors
rad Radical 1343230
Product of the distinct prime numbers

The prime factorization of 21491680 is 2 × 2 × 2 × 2 × 2 × 35 × 31 × 619. Since it has a total of 8 prime factors.

Most popular turbo-numbers

Basic calculations (n = 21491680)

Multiplication

n×y
n×2 42983360
n×3 64475040
n×4 85966720
n×5 107458400

Division

n÷y
n÷2 10745840
n÷3 7163893.3333333
n÷3 5372920
n÷5 4298336

Exponentiation

ny
n2 461892309222400
n3 9.9268417042689E+21
n4 2.133445053188E+29
n5 4.58513183807E+36

Nth Root

y√n
2√n 4635.9119922621
3√n 278.02901548329
4√n 68.087531841462
5√n 29.272113006966

Divisors of 21491680

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 -21491679
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 21491680 can be divided by 48 positive divisors. The sum of these divisors (counting 21491680) is 1, the average is 0.020833333333333.

Base conversion 21491680

Base System Value
2 Binary 1010001111110111111100000
3 Ternary 1111102220001011
4 Quaternary 1101332333200
5 Quinary 21000213210
6 Senary 2044350304
8 Octal 121767740
10 Decimal 21491680
12 Duodecimal 7245394
16 Hexadecimal 147efe0
20 Vigesimal 6e6940
36 Base36 csn34

Cryptographic Hash Functions

md5 5133d1dd6d5191b596e5ad2cb7127e7b
sha1 8422525410d7b8d6ff3886ed7d0d83d6a1435ce2
sha256 25ab7b43caf769739b91061ba882a1eaafa6208d8cb88bbf9512e6f658ed2633
sha512 d2762a5ce2719daef431532af85fe993735278cdbd71eee6e1c8d24a44a14ebc445c131af7e44de5130346baeb29abb6e4329163ee591e25a00b700a3635a7f1
ripemd-160 91a4751db1ed6cb6febec858e83b06c89e840a8e

21491680 as geometric shapes

Circle

Radius = n
Diameter 42983360
Circumference 135036208.00261
Area 1.4510774854027E+15

Sphere

Radius = n
Volume 4.1581457295306E+22
Surface area 5.8043099416109E+15
Circumference 135036208.00261

Square

Length = n
Perimeter 85966720
Area 461892309222400
Diagonal 30393825.334183

Cube

Length = n
Surface area 2771353855334400
Volume 9.9268417042689E+21
Space diagonal 37224681.700012

Equilateral Triangle

Length = n
Perimeter 64475040
Area 2.0000523679963E+14
Altitude 18612340.850006

Triangular Pyramid

Length = n
Surface area 2.0000523679963E+14
Volume 1.1698895141423E+21
Height 10131275.111394