19981728 (number)

19981728 is an even 8-digits composite number following 19981727 and preceding 19981729. In scientific notation, it is written as 1.9981728 × 10^7. The sum of its digits is 45. It has a total of 9 prime factors and 72 positive divisors. There are 6137856 positive integers (up to 19981728) that are relatively prime to 19981728.

Interesting facts

Basic properties

Name

Name nineteen million nine hundred eighty-one thousand seven hundred twenty-eight

Notation

Scientific notation 1.9981728 × 10^7
Engineering notation 1.9981728 × 10^6

Prime Factorization of 19981728

Prime Factorization 2 × 2 × 2 × 2 × 2 × 9 × 9 × 13 × 593

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 9
Total number of prime factors
rad Radical 138762
Product of the distinct prime numbers

The prime factorization of 19981728 is 2 × 2 × 2 × 2 × 2 × 9 × 9 × 13 × 593. Since it has a total of 9 prime factors.

Most popular turbo-numbers

5, 1, 73, 64, 311, 211, 2597, 5025, 8215, 74394, 235257, 672124, 1662608, 2532269, 58143661, 70488703, 412558005, 353174907, 6784923790, 2997508177

Basic calculations (n = 19981728)

Multiplication

n×y
n×2 39963456
n×3 59945184
n×4 79926912
n×5 99908640

Division

n÷y
n÷2 9990864
n÷3 6660576
n÷3 4995432
n÷5 3996345.6

Exponentiation

ny
n2 399269453865984
n3 7.9780936258586E+21
n4 1.5941609679044E+29
n5 3.1854090848883E+36

Nth Root

y√n
2√n 4470.0926164902
3√n 271.35907340856
4√n 66.858751233404
5√n 28.848723987878

Divisors of 19981728

1, 2, 4, 8, 9, 13, 16, 18, 26, 32, 36, 52, 72, 81, 104, 117, 144, 162, 208, 234, 288, 324, 416, 468, 593, 648, 936, 1053, 1186, 1296, 1872, 2106, 2372, 2592, 3744, 4212, 4744, 5337, 7709, 8424, 9488, 10674, 15418, 16848, 18976, 21348, 30836, 33696, 42696, 48033, 61672, 69381, 85392, 96066, 123344, 138762, 170784, 192132, 246688, 277524, 384264, 555048, 624429, 768528, 1110096, 1248858, 1537056, 2220192, 2497716, 4995432, 9990864, 19981728

72 divisors

τ Total Divisors 72
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -19981727
Sum of the proper positive divisors of n
A Arithmetic Mean 0.013888888888889
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 72
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 19981728 can be divided by 72 positive divisors. The sum of these divisors (counting 19981728) is 1, the average is 0.013888888888889.

Base conversion 19981728

Base System Value
2 Binary 1001100001110010110100000
3 Ternary 1101121011210000
4 Quaternary 1030032112200
5 Quinary 20103403403
6 Senary 1552140000
8 Octal 114162640
10 Decimal 19981728
12 Duodecimal 6837600
16 Hexadecimal 130e5a0
20 Vigesimal 64he68
36 Base36 bwa00

Cryptographic Hash Functions

md5 656c839c390480018046f202a2d81e7f
sha1 0035a43c273858e2737806cb267f7cc2123cfca3
sha256 935aa7cf2723e3f58ef9ada33933bc72b66deb106d27cec1c36992673317aa99
sha512 a7ffa103e4a9c34488e9d4b94f3854fb25d1cdd2fde892150a984ab6ddfb0ab5bd1fb979a7417ccc2559c4162536fbdd096e71ade04a30ecd417deb7eed0dc0b
ripemd-160 f8dfeae1f53586608783ea7874f31c28c28c24cd

19981728 as geometric shapes

Circle

Radius = n
Diameter 39963456
Circumference 125548899.78166
Area 1.2543419830682E+15

Sphere

Radius = n
Volume 3.3418560432865E+22
Surface area 5.0173679322727E+15
Circumference 125548899.78166

Square

Length = n
Perimeter 79926912
Area 399269453865984
Diagonal 28258430.73725

Cube

Length = n
Surface area 2395616723195904
Volume 7.9780936258586E+21
Space diagonal 34609368.119022

Equilateral Triangle

Length = n
Perimeter 59945184
Area 1.7288874500154E+14
Altitude 17304684.059511

Triangular Pyramid

Length = n
Surface area 1.7288874500154E+14
Volume 9.4022735063097E+20
Height 9419476.9124167