20181720 (number)

20181720 is an even 8-digits composite number following 20181719 and preceding 20181721. In scientific notation, it is written as 2.0181720 × 10^7. The sum of its digits is 21. It has a total of 6 prime factors and 32 positive divisors. There are 4669440 positive integers (up to 20181720) that are relatively prime to 20181720.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0181720 × 10^7
Engineering notation 2.0181720 × 10^6

Prime Factorization of 20181720

Prime Factorization 2 × 2 × 2 × 39 × 85 × 761

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 5045430
Product of the distinct prime numbers

The prime factorization of 20181720 is 2 × 2 × 2 × 39 × 85 × 761. Since it has a total of 6 prime factors.

Most popular turbo-numbers

9, 4, 21, 67, 365, 971, 5513, 190, 11423, 88773, 855577, 621570, 8018043, 6490415, 87228841, 76777508, 303140320, 645227373, 35574239, 3023860402

Basic calculations (n = 20181720)

Multiplication

n×y
n×2 40363440
n×3 60545160
n×4 80726880
n×5 100908600

Division

n÷y
n÷2 10090860
n÷3 6727240
n÷3 5045430
n÷5 4036344

Exponentiation

ny
n2 407301822158400
n3 8.2200513302906E+21
n4 1.6589477433355E+29
n5 3.348041885063E+36

Nth Root

y√n
2√n 4492.4069272496
3√n 272.26139088084
4√n 67.025420008006
5√n 28.906242071583

Divisors of 20181720

1, 2, 4, 8, 39, 78, 85, 156, 170, 312, 340, 680, 761, 1522, 3044, 3315, 6088, 6630, 13260, 26520, 29679, 59358, 64685, 118716, 129370, 237432, 258740, 517480, 2522715, 5045430, 10090860, 20181720

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 -20181719
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 20181720 can be divided by 32 positive divisors. The sum of these divisors (counting 20181720) is 1, the average is 0.03125.

Base conversion 20181720

Base System Value
2 Binary 1001100111111001011011000
3 Ternary 1101222100010010
4 Quaternary 1030333023120
5 Quinary 20131303340
6 Senary 2000321520
8 Octal 114771330
10 Decimal 20181720
12 Duodecimal 69132a0
16 Hexadecimal 133f2d8
20 Vigesimal 662e60
36 Base36 c0kbc

Cryptographic Hash Functions

md5 f7f338c58df775e1f9a18d4398c7bf57
sha1 e1a607e6543402fc6df241b769719dd2ad91d9e3
sha256 d9f86830b47b79ff9a922de2759b348567a9ffc4b297bb35de137d7844792885
sha512 e308bdf7c2cda2a5a7183ab8b10ade3e1739d768e6485522703b4a9d1f9e6578bd0f7226f20c34612e72cb7e132c95618a277512ed3df8606fd198af2312ac44
ripemd-160 d853e279845ac1c31bbb8d5fe2f7e7f6b83332b7

20181720 as geometric shapes

Circle

Radius = n
Diameter 40363440
Circumference 126805486.57761
Area 1.2795764122866E+15

Sphere

Radius = n
Volume 3.4432070495163E+22
Surface area 5.1183056491463E+15
Circumference 126805486.57761

Square

Length = n
Perimeter 80726880
Area 407301822158400
Diagonal 28541262.136016

Cube

Length = n
Surface area 2443810932950400
Volume 8.2200513302906E+21
Space diagonal 34955764.424129

Equilateral Triangle

Length = n
Perimeter 60545160
Area 1.7636686249843E+14
Altitude 17477882.212064

Triangular Pyramid

Length = n
Surface area 1.7636686249843E+14
Volume 9.6874233955833E+20
Height 9513754.0453388