21491913 (number)

21491913 is an odd 8-digits composite number following 21491912 and preceding 21491914. In scientific notation, it is written as 2.1491913 × 10^7. The sum of its digits is 30. It has a total of 5 prime factors and 32 positive divisors. There are 13059200 positive integers (up to 21491913) that are relatively prime to 21491913.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.1491913 × 10^7
Engineering notation 2.1491913 × 10^6

Prime Factorization of 21491913

Prime Factorization 3 × 41 × 23 × 107 × 71

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 21491913
Product of the distinct prime numbers

The prime factorization of 21491913 is 3 × 41 × 23 × 107 × 71. Since it has a total of 5 prime factors.

Most popular turbo-numbers

1, 4, 54, 100, 549, 703, 708, 4706, 88187, 70595, 860053, 543928, 7435769, 629045, 80812461, 9678180, 877979591, 981013192, 8425402375, 5747718733

Basic calculations (n = 21491913)

Multiplication

n×y
n×2 42983826
n×3 64475739
n×4 85967652
n×5 107459565

Division

n÷y
n÷2 10745956.5
n÷3 7163971
n÷3 5372978.25
n÷5 4298382.6

Exponentiation

ny
n2 461902324399569
n3 9.9271645704933E+21
n4 2.1335375728572E+29
n5 4.5853803898079E+36

Nth Root

y√n
2√n 4635.937122093
3√n 278.03002022135
4√n 68.087716381834
5√n 29.272176476855

Divisors of 21491913

1, 3, 23, 41, 69, 71, 107, 123, 213, 321, 943, 1633, 2461, 2829, 2911, 4387, 4899, 7383, 7597, 8733, 13161, 22791, 66953, 100901, 174731, 200859, 302703, 311477, 524193, 934431, 7163971, 21491913

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21491912
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491913 can be divided by 32 positive divisors. The sum of these divisors (counting 21491913) is 1, the average is 0.03125.

Base conversion 21491913

Base System Value
2 Binary 1010001111111000011001001
3 Ternary 1111102220100210
4 Quaternary 1101333003021
5 Quinary 21000220123
6 Senary 2044351333
8 Octal 121770311
10 Decimal 21491913
12 Duodecimal 7245549
16 Hexadecimal 147f0c9
20 Vigesimal 6e69fd
36 Base36 csn9l

Cryptographic Hash Functions

md5 26e0f9314574c9d74a31a5e6019bc406
sha1 88affe4548704e51de4c31dcc1a1ca6782b77b66
sha256 ec87f7f90fe5e738d81b839fad2ca34d886fa425fdeaa1fb4d6f6c8af12f5782
sha512 d9161bd178d8720ef3b3ee50f9d95125b2fb495aaa4a16bddd83b86fe27567c87f6aa685f2492bde5498752351a73893d19a34b7458c2556c4a9aa4fc19e2363
ripemd-160 8767110284ac90c9dc73be3416651f8a28a0f50a

21491913 as geometric shapes

Circle

Radius = n
Diameter 42983826
Circumference 135037671.98478
Area 1.4511089490097E+15

Sphere

Radius = n
Volume 4.1582809714185E+22
Surface area 5.8044357960389E+15
Circumference 135037671.98478

Square

Length = n
Perimeter 85967652
Area 461902324399569
Diagonal 30394154.845943

Cube

Length = n
Surface area 2771413946397414
Volume 9.9271645704933E+21
Space diagonal 37225085.26785

Equilateral Triangle

Length = n
Perimeter 64475739
Area 2.0000957349855E+14
Altitude 18612542.633925

Triangular Pyramid

Length = n
Surface area 2.0000957349855E+14
Volume 1.1699275642918E+21
Height 10131384.948648