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

20681985 (number)

20681985 is an odd 8-digits composite number following 20681984 and preceding 20681986. In scientific notation, it is written as 2.0681985 × 10^7. The sum of its digits is 39. It has a total of 2 prime factors and 4 positive divisors. There are 11030384 positive integers (up to 20681985) that are relatively prime to 20681985.

Interesting facts

20681985 has 4 divisors, whose sum is 22060800
The reverse of 20681985 is 58918602
Previous prime number is 15

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3

Name

Name	twenty million six hundred eighty-one thousand nine hundred eighty-five

Notation

Scientific notation	2.0681985 × 10^7
Engineering notation	2.0681985 × 10^6

Prime Factorization of 20681985

Prime Factorization 15 × 1378799

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	20681985	Product of the distinct prime numbers

The prime factorization of 20681985 is 15 × 1378799. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 3, 55, 80, 387, 591, 1138, 679, 21510, 55851, 484666, 837683, 9810147, 7819017, 67763842, 21449159, 937916841, 221396102, 3315466288, 7285836049

Basic calculations (n = 20681985)

Multiplication

n×y

n×2	41363970
n×3	62045955
n×4	82727940
n×5	103409925

Division

n÷y

n÷2	10340992.5
n÷3	6893995
n÷3	5170496.25
n÷5	4136397

Exponentiation

n^y

n²	427744503540225
n³	8.8466054060514E+21
n⁴	1.8296536030887E+29
n⁵	3.7840868374277E+36

Nth Root

^y√n

²√n	4547.7450456243
³√n	274.49266240286
⁴√n	67.436970910801
⁵√n	29.048147674007

Divisors of 20681985

1, 15, 1378799, 20681985

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	-20681984	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 20681985 can be divided by 4 positive divisors. The sum of these divisors (counting 20681985) is 1, the average is 0.25.

Base conversion 20681985

Base	System	Value
2	Binary	1001110111001010100000001
3	Ternary	1102220202100110
4	Quaternary	1032321110001
5	Quinary	20243310420
6	Senary	2015141533
8	Octal	116712401
10	Decimal	20681985
12	Duodecimal	6b148a9
16	Hexadecimal	13b9501
20	Vigesimal	6954j5
36	Base36	cbabl

Cryptographic Hash Functions

md5	15f32f78a46bad00c1331fd78023399b
sha1	c7af932539d2c5fa09d9b3602227c0cd46a33adf
sha256	c05aa4a3495efebe036319b2fb5bee9a005115c9c7923deee6762b5c8b564fca
sha512	a07aea3c6148249a376c56e9c9dbdbb91cd724696134de74c572814f4e4ea74e8b7f91e278d7f0a78c93d725c88805f4da37ff4bb2cbdf81fc74ccc16ecb4a67
ripemd-160	258e3147d7dad892aed5b7f341f9f75df7f73d5f

20681985 as geometric shapes

Circle

Radius = n

Diameter	41363970
Circumference	129948744.27531
Area	1.3437989899354E+15

Sphere

Radius = n

Volume	3.7056574070478E+22
Surface area	5.3751959597415E+15
Circumference	129948744.27531

Square

Length = n

Perimeter	82727940
Area	427744503540225
Diagonal	29248743.683797

Cube

Length = n

Surface area	2566467021241350
Volume	8.8466054060514E+21
Space diagonal	35822248.821377

Equilateral Triangle

Length = n

Perimeter	62045955
Area	1.852188031975E+14
Altitude	17911124.410689

Triangular Pyramid

Length = n

Surface area	1.852188031975E+14
Volume	1.0425824455168E+21
Height	9749581.2279323