21491928 (number)

21491928 is an even 8-digits composite number following 21491927 and preceding 21491929. In scientific notation, it is written as 2.1491928 × 10^7. The sum of its digits is 36. It has a total of 5 prime factors and 16 positive divisors. There are 6932160 positive integers (up to 21491928) that are relatively prime to 21491928.

Interesting facts

Basic properties

Name

Name twenty-one million four hundred ninety-one thousand nine hundred twenty-eight

Notation

Scientific notation 2.1491928 × 10^7
Engineering notation 2.1491928 × 10^6

Prime Factorization of 21491928

Prime Factorization 2 × 2 × 2 × 279 × 9629

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 5372982
Product of the distinct prime numbers

The prime factorization of 21491928 is 2 × 2 × 2 × 279 × 9629. Since it has a total of 5 prime factors.

Most popular turbo-numbers

3, 10, 29, 44, 38, 540, 970, 5059, 17451, 72624, 864887, 592714, 639521, 3330948, 26405334, 67962288, 826082837, 174384436, 4624329326, 3581415096

Basic calculations (n = 21491928)

Multiplication

n×y
n×2 42983856
n×3 64475784
n×4 85967712
n×5 107459640

Division

n÷y
n÷2 10745964
n÷3 7163976
n÷3 5372982
n÷5 4298385.6

Exponentiation

ny
n2 461902969157184
n3 9.9271853561124E+21
n4 2.1335435291622E+29
n5 4.585396391362E+36

Nth Root

y√n
2√n 4635.9387398886
3√n 278.03008490381
4√n 68.087728262064
5√n 29.272180562881

Divisors of 21491928

1, 2, 4, 8, 279, 558, 1116, 2232, 9629, 19258, 38516, 77032, 2686491, 5372982, 10745964, 21491928

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491927
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491928 can be divided by 16 positive divisors. The sum of these divisors (counting 21491928) is 1, the average is 0.0625.

Base conversion 21491928

Base System Value
2 Binary 1010001111111000011011000
3 Ternary 1111102220101100
4 Quaternary 1101333003120
5 Quinary 21000220203
6 Senary 2044351400
8 Octal 121770330
10 Decimal 21491928
12 Duodecimal 7245560
16 Hexadecimal 147f0d8
20 Vigesimal 6e69g8
36 Base36 csna0

Cryptographic Hash Functions

md5 4804e325cd2e312b6869d3e2962b9413
sha1 5a04b635f0b7fb8a65c5122fe8ca8c2268aa856b
sha256 51ce02822c47ed2df81a2bd65463ed584924a2303717c314a887ad7eb21acac4
sha512 86102f05fc6e0b8add6929f41ee674da37fa7f82ce7a901f339b31c1e0f7b330cccfefe48eebefa4a4073f7b6bed4cd530c38e99a98f78b1c05fad85f9e9d4df
ripemd-160 535402ced61d9f11c22ef1efcf6dcefef45c9903

21491928 as geometric shapes

Circle

Radius = n
Diameter 42983856
Circumference 135037766.23256
Area 1.4511109745755E+15

Sphere

Radius = n
Volume 4.1582896780783E+22
Surface area 5.8044438983021E+15
Circumference 135037766.23256

Square

Length = n
Perimeter 85967712
Area 461902969157184
Diagonal 30394176.059146

Cube

Length = n
Surface area 2771417814943104
Volume 9.9271853561124E+21
Space diagonal 37225111.248612

Equilateral Triangle

Length = n
Perimeter 64475784
Area 2.0000985268679E+14
Altitude 18612555.624306

Triangular Pyramid

Length = n
Surface area 2.0000985268679E+14
Volume 1.1699300139005E+21
Height 10131392.019715