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

19987921 (number)

19987921 is an odd 8-digits composite number following 19987920 and preceding 19987922. In scientific notation, it is written as 1.9987921 × 10^7. The sum of its digits is 46. It has a total of 3 prime factors and 8 positive divisors. There are 19708368 positive integers (up to 19987921) that are relatively prime to 19987921.

Interesting facts

19987921 has 8 divisors, whose sum is 20269440
The reverse of 19987921 is 12978991
Previous prime number is 367

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 46
Digital Root 1

Name

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

Notation

Scientific notation	1.9987921 × 10^7
Engineering notation	1.9987921 × 10^6

Prime Factorization of 19987921

Prime Factorization 107 × 367 × 509

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	19987921	Product of the distinct prime numbers

The prime factorization of 19987921 is 107 × 367 × 509. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 10, 9, 62, 109, 852, 7246, 6590, 27326, 76761, 221262, 113785, 1763619, 9769335, 57405773, 88186127, 747414579, 472909694, 3642344208, 878785968

Basic calculations (n = 19987921)

Multiplication

n×y

n×2	39975842
n×3	59963763
n×4	79951684
n×5	99939605

Division

n÷y

n÷2	9993960.5
n÷3	6662640.3333333
n÷3	4996980.25
n÷5	3997584.2

Exponentiation

n^y

n²	399516985902241
n³	7.9855139523721E+21
n⁴	1.5961382202441E+29
n⁵	3.190348465132E+36

Nth Root

^y√n

²√n	4470.7852777784
³√n	271.38710490405
⁴√n	66.863931067343
⁵√n	28.850512001434

Divisors of 19987921

1, 107, 367, 509, 39269, 54463, 186803, 19987921

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-19987920	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 19987921 can be divided by 8 positive divisors. The sum of these divisors (counting 19987921) is 1, the average is 0.125.

Base conversion 19987921

Base	System	Value
2	Binary	1001100001111110111010001
3	Ternary	1101121111021101
4	Quaternary	1030033313101
5	Quinary	20104103141
6	Senary	1552224401
8	Octal	114176721
10	Decimal	19987921
12	Duodecimal	683b101
16	Hexadecimal	130fdd1
20	Vigesimal	64i9g1
36	Base36	bwes1

Cryptographic Hash Functions

md5	b20d061f75362fe4fdae113f531d85e7
sha1	4db8b7165b23c2d952597365cde7a6075bf5af66
sha256	f1b1c5f0fcffa48a22ee293c2ac6db2d43dfc0d417c2cc5ff31cac2eb727fff5
sha512	b25824058a33631c1ab6f4831df83ee97789892aa7a7c195850cc689797f176b04d180192c0f94c17f245f73f427c427f4805f76aeeef1021b2f76ffc670d144
ripemd-160	e54d80dab1a731aafe45c79e5150c854e7a2822b

19987921 as geometric shapes

Circle

Radius = n

Diameter	39975842
Circumference	125587811.54827
Area	1.2551196278948E+15

Sphere

Radius = n

Volume	3.3449642623881E+22
Surface area	5.0204785115793E+15
Circumference	125587811.54827

Square

Length = n

Perimeter	79951684
Area	399516985902241
Diagonal	28267188.961842

Cube

Length = n

Surface area	2397101915413446
Volume	7.9855139523721E+21
Space diagonal	34620094.709673

Equilateral Triangle

Length = n

Perimeter	59963763
Area	1.7299592951737E+14
Altitude	17310047.354836

Triangular Pyramid

Length = n

Surface area	1.7299592951737E+14
Volume	9.4110184449702E+20
Height	9422396.320614