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

18921921 (number)

18921921 is an odd 8-digits composite number following 18921920 and preceding 18921922. In scientific notation, it is written as 1.8921921 × 10^7. The sum of its digits is 33. It has a total of 3 prime factors and 8 positive divisors. There are 12544560 positive integers (up to 18921921) that are relatively prime to 18921921.

Interesting facts

18921921 has 8 divisors, whose sum is 25369344
The reverse of 18921921 is 12912981
Previous prime number is 181

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 33
Digital Root 6

Name

Name	eighteen million nine hundred twenty-one thousand nine hundred twenty-one

Notation

Scientific notation	1.8921921 × 10^7
Engineering notation	1.8921921 × 10^6

Prime Factorization of 18921921

Prime Factorization 3 × 181 × 34847

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	18921921	Product of the distinct prime numbers

The prime factorization of 18921921 is 3 × 181 × 34847. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 3, 30, 89, 741, 806, 5256, 2570, 16394, 9905, 763109, 242867, 9299612, 7321262, 76373558, 7609330, 849586082, 909086627, 6752453732, 4155741949

Basic calculations (n = 18921921)

Multiplication

n×y

n×2	37843842
n×3	56765763
n×4	75687684
n×5	94609605

Division

n÷y

n÷2	9460960.5
n÷3	6307307
n÷3	4730480.25
n÷5	3784384.2

Exponentiation

n^y

n²	358039094330241
n³	6.7747874578284E+21
n⁴	1.2819199306882E+29
n⁵	2.4256387656807E+36

Nth Root

^y√n

²√n	4349.9334477668
³√n	266.47414350435
⁴√n	65.954025258257
⁵√n	28.535996626591

Divisors of 18921921

1, 3, 181, 543, 34847, 104541, 6307307, 18921921

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	-18921920	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 18921921 can be divided by 8 positive divisors. The sum of these divisors (counting 18921921) is 1, the average is 0.125.

Base conversion 18921921

Base	System	Value
2	Binary	1001000001011100111000001
3	Ternary	1022121022222220
4	Quaternary	1020023213001
5	Quinary	14321000141
6	Senary	1513321253
8	Octal	110134701
10	Decimal	18921921
12	Duodecimal	6406229
16	Hexadecimal	120b9c1
20	Vigesimal	5i54g1
36	Base36	b9k8x

Cryptographic Hash Functions

md5	83c7602232e252fc7c4bd30e0fa62dae
sha1	53531f3ec6a8ac7658afcf30c1b8b235e63083c4
sha256	3c5092b9c5987b98c13540ba55109b0df739104d013cac75fc678f2971676e2e
sha512	04ec2f9e92c4e9bb666208ee32bc70542e86661577bbe378ccc830e85acbb44be4d82b328883546b7b5e63166e40ca8d95b480d67ecc122260195ba0ee3b50d5
ripemd-160	22acec3af9a9c0cdb506a757e41301801e50d0f3

18921921 as geometric shapes

Circle

Radius = n

Diameter	37843842
Circumference	118889936.01081
Area	1.1248129884458E+15

Sphere

Radius = n

Volume	2.8378163342861E+22
Surface area	4.4992519537833E+15
Circumference	118889936.01081

Square

Length = n

Perimeter	75687684
Area	358039094330241
Diagonal	26759637.304352

Cube

Length = n

Surface area	2148234565981446
Volume	6.7747874578284E+21
Space diagonal	32773728.548804

Equilateral Triangle

Length = n

Perimeter	56765763
Area	1.5503547561898E+14
Altitude	16386864.274402

Triangular Pyramid

Length = n

Surface area	1.5503547561898E+14
Volume	7.9841635875467E+20
Height	8919879.1014508