19818981 (number)

19818981 is an odd 8-digits composite number following 19818980 and preceding 19818982. In scientific notation, it is written as 1.9818981 × 10^7. The sum of its digits is 45. It has a total of 5 prime factors and 24 positive divisors. There are 10450944 positive integers (up to 19818981) that are relatively prime to 19818981.

Interesting facts

Basic properties

Name

Name nineteen million eight hundred eighteen thousand nine hundred eighty-one

Notation

Scientific notation 1.9818981 × 10^7
Engineering notation 1.9818981 × 10^6

Prime Factorization of 19818981

Prime Factorization 9 × 7 × 13 × 7 × 3457

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 2831283
Product of the distinct prime numbers

The prime factorization of 19818981 is 9 × 7 × 13 × 7 × 3457. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 8, 27, 63, 826, 399, 6387, 7279, 75972, 35288, 615990, 954556, 352983, 1288783, 64067028, 12665622, 80592229, 731654912, 2958002682, 6811534390

Basic calculations (n = 19818981)

Multiplication

n×y
n×2 39637962
n×3 59456943
n×4 79275924
n×5 99094905

Division

n÷y
n÷2 9909490.5
n÷3 6606327
n÷3 4954745.25
n÷5 3963796.2

Exponentiation

ny
n2 392792007878361
n3 7.7847373410931E+21
n4 1.5428556145311E+29
n5 3.0577826110136E+36

Nth Root

y√n
2√n 4451.8514126148
3√n 270.62034317556
4√n 66.722195801808
5√n 28.801576768976

Divisors of 19818981

1, 7, 9, 13, 49, 63, 91, 117, 441, 637, 819, 3457, 5733, 24199, 31113, 44941, 169393, 217791, 314587, 404469, 1524537, 2202109, 2831283, 19818981

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -19818980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 19818981 can be divided by 24 positive divisors. The sum of these divisors (counting 19818981) is 1, the average is 0.041666666666667.

Base conversion 19818981

Base System Value
2 Binary 1001011100110100111100101
3 Ternary 1101021220112100
4 Quaternary 1023212213211
5 Quinary 20033201411
6 Senary 1544442313
8 Octal 113464745
10 Decimal 19818981
12 Duodecimal 6779399
16 Hexadecimal 12e69e5
20 Vigesimal 63h791
36 Base36 bssf9

Cryptographic Hash Functions

md5 8c708d3c882812fb189d773e064ad6a9
sha1 5ca942037e52dfe649519eec1fd3c3b77130a293
sha256 591cd070db45641afe44002dd18826f5ebf8b370793b01e86ead3d8e19284938
sha512 d1aba878f64064adaafa16629416f15d34cb05bbbf9fd545f092363426a700208919ef6cd0b428f588d4162340b167852d2373b36ffae7579d1cccea803cc0b8
ripemd-160 325d27978fe3e6ded25f5e1b2a84f24c181c5a11

19818981 as geometric shapes

Circle

Radius = n
Diameter 39637962
Circumference 124526330.22247
Area 1.2339924863394E+15

Sphere

Radius = n
Volume 3.2608631521206E+22
Surface area 4.9359699453578E+15
Circumference 124526330.22247

Square

Length = n
Perimeter 79275924
Area 392792007878361
Diagonal 28028271.722615

Cube

Length = n
Surface area 2356752047270166
Volume 7.7847373410931E+21
Space diagonal 34327482.046242

Equilateral Triangle

Length = n
Perimeter 59456943
Area 1.7008392861308E+14
Altitude 17163741.023121

Triangular Pyramid

Length = n
Surface area 1.7008392861308E+14
Volume 9.1744009394051E+20
Height 9342757.2408716