19981388 (number)

19981388 is an even 8-digits composite number following 19981387 and preceding 19981389. In scientific notation, it is written as 1.9981388 × 10^7. The sum of its digits is 47. It has a total of 7 prime factors and 72 positive divisors. There are 7650720 positive integers (up to 19981388) that are relatively prime to 19981388.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.9981388 × 10^7
Engineering notation 1.9981388 × 10^6

Prime Factorization of 19981388

Prime Factorization 2 × 2 × 7 × 23 × 19 × 23 × 71

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 7
Total number of prime factors
rad Radical 434378
Product of the distinct prime numbers

The prime factorization of 19981388 is 2 × 2 × 7 × 23 × 19 × 23 × 71. Since it has a total of 7 prime factors.

Most popular turbo-numbers

4, 2, 26, 21, 605, 660, 2336, 9848, 26681, 22161, 679074, 745044, 6305307, 8879961, 91714734, 22767643, 979074670, 229416332, 5506297798, 8419152553

Basic calculations (n = 19981388)

Multiplication

n×y
n×2 39962776
n×3 59944164
n×4 79925552
n×5 99906940

Division

n÷y
n÷2 9990694
n÷3 6660462.6666667
n÷3 4995347
n÷5 3996277.6

Exponentiation

ny
n2 399255866406544
n3 7.9776863779453E+21
n4 1.5940524686004E+29
n5 3.1851380867462E+36

Nth Root

y√n
2√n 4470.0545857965
3√n 271.35753429229
4√n 66.85846682206
5√n 28.848625811855

Divisors of 19981388

1, 2, 4, 7, 14, 19, 23, 28, 38, 46, 71, 76, 92, 133, 142, 161, 266, 284, 322, 437, 497, 529, 532, 644, 874, 994, 1058, 1349, 1633, 1748, 1988, 2116, 2698, 3059, 3266, 3703, 5396, 6118, 6532, 7406, 9443, 10051, 11431, 12236, 14812, 18886, 20102, 22862, 31027, 37559, 37772, 40204, 45724, 62054, 70357, 75118, 124108, 140714, 150236, 217189, 262913, 281428, 434378, 525826, 713621, 868756, 1051652, 1427242, 2854484, 4995347, 9990694, 19981388

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 -19981387
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 19981388 can be divided by 72 positive divisors. The sum of these divisors (counting 19981388) is 1, the average is 0.013888888888889.

Base conversion 19981388

Base System Value
2 Binary 1001100001110010001001100
3 Ternary 1101121011022102
4 Quaternary 1030032101030
5 Quinary 20103401023
6 Senary 1552134232
8 Octal 114162114
10 Decimal 19981388
12 Duodecimal 6837378
16 Hexadecimal 130e44c
20 Vigesimal 64hd98
36 Base36 bw9qk

Cryptographic Hash Functions

md5 1b911c55302f6322e42193c3994f7b8d
sha1 1c89cf987b1aded8c9dbd286996acde9c68f4ebc
sha256 25ffc8c109ca04d5349e7bac404c57147a138af506d696db6a5c50a9e902c3d0
sha512 7290bbbea02b13af449c8bfe450b4b16433c8c198f7287189c17b583f7fdd315a0d9328bc9cc98dc88340c63bb8a588ae29b77d80ea0ae40d8bfe74e297f9078
ripemd-160 35d8294948df6629fa670cc8fef7f9c5559851f2

19981388 as geometric shapes

Circle

Radius = n
Diameter 39962776
Circumference 125546763.49865
Area 1.2542992968054E+15

Sphere

Radius = n
Volume 3.3416854556795E+22
Surface area 5.0171971872217E+15
Circumference 125546763.49865

Square

Length = n
Perimeter 79925552
Area 399255866406544
Diagonal 28257949.904639

Cube

Length = n
Surface area 2395535198439264
Volume 7.9776863779453E+21
Space diagonal 34608779.221747

Equilateral Triangle

Length = n
Perimeter 59944164
Area 1.7288286145902E+14
Altitude 17304389.610874

Triangular Pyramid

Length = n
Surface area 1.7288286145902E+14
Volume 9.4017935600411E+20
Height 9419316.6348797