20161721 (number)

20161721 is an odd 8-digits composite number following 20161720 and preceding 20161722. In scientific notation, it is written as 2.0161721 × 10^7. The sum of its digits is 20. It has a total of 2 prime factors and 4 positive divisors. There are 19962000 positive integers (up to 20161721) that are relatively prime to 20161721.

Interesting facts

Basic properties

Name

Name twenty million one hundred sixty-one thousand seven hundred twenty-one

Notation

Scientific notation 2.0161721 × 10^7
Engineering notation 2.0161721 × 10^6

Prime Factorization of 20161721

Prime Factorization 101 × 199621

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 20161721
Product of the distinct prime numbers

The prime factorization of 20161721 is 101 × 199621. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 8, 98, 61, 165, 424, 2485, 1780, 98052, 13572, 324771, 476599, 7993289, 7264841, 96404602, 20164389, 352821762, 993656275, 3277681393, 3067826938

Basic calculations (n = 20161721)

Multiplication

n×y
n×2 40323442
n×3 60485163
n×4 80646884
n×5 100808605

Division

n÷y
n÷2 10080860.5
n÷3 6720573.6666667
n÷3 5040430.25
n÷5 4032344.2

Exponentiation

ny
n2 406494993681841
n3 8.19563865051E+21
n4 1.652381798884E+29
n5 3.3314860814577E+36

Nth Root

y√n
2√n 4490.180508621
3√n 272.17142902262
4√n 67.008809186711
5√n 28.900510892909

Divisors of 20161721

1, 101, 199621, 20161721

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20161720
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20161721 can be divided by 4 positive divisors. The sum of these divisors (counting 20161721) is 1, the average is 0.25.

Base conversion 20161721

Base System Value
2 Binary 1001100111010010010111001
3 Ternary 1101221022200102
4 Quaternary 1030322102321
5 Quinary 20130133341
6 Senary 2000045145
8 Octal 114722271
10 Decimal 20161721
12 Duodecimal 69037b5
16 Hexadecimal 133a4b9
20 Vigesimal 660461
36 Base36 c04vt

Cryptographic Hash Functions

md5 a58f7166dd75344d8479399c976f8183
sha1 4d18abdb33985c53ff88a724d45a6177ec4a9d67
sha256 6b9d7611f818c761458eff7c625f0ab6ec600accfaaa42dc942a62336cee5dbc
sha512 e2ed52bb54b26ba5a18d4bca9d9d7c5166a9905e32e4951fc4ce6fad2413e8108086c6a2230d5bcc8ba6c9f1ea3135c2f9fec3d86230a2bfc42354a64f20f6b9
ripemd-160 eeaaad676c0778490720143c83fb27e07118840f

20161721 as geometric shapes

Circle

Radius = n
Diameter 40323442
Circumference 126679829.15465
Area 1.2770416858719E+15

Sphere

Radius = n
Volume 3.4329810901225E+22
Surface area 5.1081667434876E+15
Circumference 126679829.15465

Square

Length = n
Perimeter 80646884
Area 406494993681841
Diagonal 28512979.278982

Cube

Length = n
Surface area 2438969962091046
Volume 8.19563865051E+21
Space diagonal 34921125.140028

Equilateral Triangle

Length = n
Perimeter 60485163
Area 1.7601749551983E+14
Altitude 17460562.570014

Triangular Pyramid

Length = n
Surface area 1.7601749551983E+14
Volume 9.6586527765504E+20
Height 9504326.4263275