Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

19987978 (number)

19987978 is an even 8-digits composite number following 19987977 and preceding 19987979. In scientific notation, it is written as 1.9987978 × 10^7. The sum of its digits is 58. It has a total of 2 prime factors and 4 positive divisors. There are 9993988 positive integers (up to 19987978) that are relatively prime to 19987978.

Interesting facts

19987978 has 4 divisors, whose sum is 29981970
The reverse of 19987978 is 87978991
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 58
Digital Root 4

Name

Name	nineteen million nine hundred eighty-seven thousand nine hundred seventy-eight

Notation

Scientific notation	1.9987978 × 10^7
Engineering notation	1.9987978 × 10^6

Prime Factorization of 19987978

Prime Factorization 2 × 9993989

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	19987978	Product of the distinct prime numbers

The prime factorization of 19987978 is 2 × 9993989. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 8, 32, 51, 200, 464, 44, 4248, 62991, 14945, 568414, 522803, 59974, 7201372, 57349602, 54660398, 367414254, 297253755, 117580830, 7142544507

Basic calculations (n = 19987978)

Multiplication

n×y

n×2	39975956
n×3	59963934
n×4	79951912
n×5	99939890

Division

n÷y

n÷2	9993989
n÷3	6662659.3333333
n÷3	4996994.5
n÷5	3997595.6

Exponentiation

n^y

n²	399519264528484
n³	7.9855822699715E+21
n⁴	1.5961564272938E+29
n⁵	3.1903939553307E+36

Nth Root

^y√n

²√n	4470.7916524929
³√n	271.38736287735
⁴√n	66.863978736633
⁵√n	28.850528456145

Divisors of 19987978

1, 2, 9993989, 19987978

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	-19987977	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 19987978 can be divided by 4 positive divisors. The sum of these divisors (counting 19987978) is 1, the average is 0.25.

Base conversion 19987978

Base	System	Value
2	Binary	1001100001111111000001010
3	Ternary	1101121111100111
4	Quaternary	1030033320022
5	Quinary	20104103403
6	Senary	1552224534
8	Octal	114177012
10	Decimal	19987978
12	Duodecimal	683b14a
16	Hexadecimal	130fe0a
20	Vigesimal	64i9ii
36	Base36	bwetm

Cryptographic Hash Functions

md5	1ac01541509ac85689c41602f0051ae0
sha1	398119bbc33cd63511150b1efdaa1d0bb2dc1155
sha256	e963d686581d8c5b374d25dfe7f97592d60d8f3c05df369d83237d41365b3d85
sha512	a36b0d40371e32c53ac7ebdfa409fc94d99ca04abadcc0ac849a448012279654fea97f3d848cdba8aa52e6a3fe2cb06f90ed2c5bec74ae50aaafcf25c55633ec
ripemd-160	c9b0388b5160a91dfba0d0faa43eeb7e72d00bbf

19987978 as geometric shapes

Circle

Radius = n

Diameter	39975956
Circumference	125588169.68983
Area	1.2551267864103E+15

Sphere

Radius = n

Volume	3.3449928791973E+22
Surface area	5.0205071456411E+15
Circumference	125588169.68983

Square

Length = n

Perimeter	79951912
Area	399519264528484
Diagonal	28267269.572015

Cube

Length = n

Surface area	2397115587170904
Volume	7.9855822699715E+21
Space diagonal	34620193.436569

Equilateral Triangle

Length = n

Perimeter	59963934
Area	1.7299691619147E+14
Altitude	17310096.718284

Triangular Pyramid

Length = n

Surface area	1.7299691619147E+14
Volume	9.4110989580332E+20
Height	9422423.1906717