21721738 (number)

21721738 is an even 8-digits composite number following 21721737 and preceding 21721739. In scientific notation, it is written as 2.1721738 × 10^7. The sum of its digits is 31. It has a total of 4 prime factors and 16 positive divisors. There are 10466496 positive integers (up to 21721738) that are relatively prime to 21721738.

Interesting facts

Basic properties

Name

Name twenty-one million seven hundred twenty-one thousand seven hundred thirty-eight

Notation

Scientific notation 2.1721738 × 10^7
Engineering notation 2.1721738 × 10^6

Prime Factorization of 21721738

Prime Factorization 2 × 109 × 37 × 2693

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21721738
Product of the distinct prime numbers

The prime factorization of 21721738 is 2 × 109 × 37 × 2693. Since it has a total of 4 prime factors.

Most popular turbo-numbers

7, 6, 60, 86, 75, 471, 4616, 2956, 35824, 74134, 999958, 380726, 7988127, 5286960, 26725209, 43264868, 169736769, 840164374, 9434972205, 2769272364

Basic calculations (n = 21721738)

Multiplication

n×y
n×2 43443476
n×3 65165214
n×4 86886952
n×5 108608690

Division

n÷y
n÷2 10860869
n÷3 7240579.3333333
n÷3 5430434.5
n÷5 4344347.6

Exponentiation

ny
n2 471833901740644
n3 1.0249052393128E+22
n4 2.226272308318E+29
n5 4.8358503797939E+36

Nth Root

y√n
2√n 4660.6585371597
3√n 279.01755177068
4√n 68.269015938123
5√n 29.334515133747

Divisors of 21721738

1, 2, 37, 74, 109, 218, 2693, 4033, 5386, 8066, 99641, 199282, 293537, 587074, 10860869, 21721738

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 -21721737
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 21721738 can be divided by 16 positive divisors. The sum of these divisors (counting 21721738) is 1, the average is 0.0625.

Base conversion 21721738

Base System Value
2 Binary 1010010110111001010001010
3 Ternary 1111212120121211
4 Quaternary 1102313022022
5 Quinary 21030043423
6 Senary 2053323334
8 Octal 122671212
10 Decimal 21721738
12 Duodecimal 733654a
16 Hexadecimal 14b728a
20 Vigesimal 6ff46i
36 Base36 cxklm

Cryptographic Hash Functions

md5 828d573b932583f8fc45be5d3d353168
sha1 de0c58f8bfe1660c4547accc0baf182c3d4effe4
sha256 0edf74b376d358342a25cbd145112fe069493c67bb6f6d646d57dd32065198a1
sha512 44f169a2b8b8e611944d87bed78f832cda56d39fda1b2071c19937f3b609ddd6fa4ee66e6b0562e0ebb40334b7fcc3dfde0dcb362a0b57f422481e4af092a261
ripemd-160 0da6e6f539c9068357d408d640448db3a0444786

21721738 as geometric shapes

Circle

Radius = n
Diameter 43443476
Circumference 136481705.048
Area 1.482309919423E+15

Sphere

Radius = n
Volume 4.2931130272677E+22
Surface area 5.9292396776921E+15
Circumference 136481705.048

Square

Length = n
Perimeter 86886952
Area 471833901740644
Diagonal 30719176.477915

Cube

Length = n
Surface area 2831003410443864
Volume 1.0249052393128E+22
Space diagonal 37623153.8447

Equilateral Triangle

Length = n
Perimeter 65165214
Area 2.0431007263706E+14
Altitude 18811576.92235

Triangular Pyramid

Length = n
Surface area 2.0431007263706E+14
Volume 1.2078624079862E+21
Height 10239725.492638