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

21156985 (number)

21156985 is an odd 8-digits composite number following 21156984 and preceding 21156986. In scientific notation, it is written as 2.1156985 × 10^7. The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors. There are 16895280 positive integers (up to 21156985) that are relatively prime to 21156985.

Interesting facts

21156985 has 8 divisors, whose sum is 25433856
The reverse of 21156985 is 58965112
Previous prime number is 607

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

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

Notation

Scientific notation	2.1156985 × 10^7
Engineering notation	2.1156985 × 10^6

Prime Factorization of 21156985

Prime Factorization 5 × 607 × 6971

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21156985	Product of the distinct prime numbers

The prime factorization of 21156985 is 5 × 607 × 6971. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 6, 43, 91, 424, 815, 8779, 1919, 81953, 90117, 815343, 832159, 6455977, 5883387, 84600330, 43154674, 192334802, 613441529, 6575355354, 1025913942

Basic calculations (n = 21156985)

Multiplication

n×y

n×2	42313970
n×3	63470955
n×4	84627940
n×5	105784925

Division

n÷y

n÷2	10578492.5
n÷3	7052328.3333333
n÷3	5289246.25
n÷5	4231397

Exponentiation

n^y

n²	447618014290225
n³	9.4702476140681E+21
n⁴	2.0036188671712E+29
n⁵	4.2390534318459E+36

Nth Root

^y√n

²√n	4599.6722709341
³√n	276.57818738087
⁴√n	67.82088373749
⁵√n	29.180367398979

Divisors of 21156985

1, 5, 607, 3035, 6971, 34855, 4231397, 21156985

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	-21156984	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 21156985 can be divided by 8 positive divisors. The sum of these divisors (counting 21156985) is 1, the average is 0.125.

Base conversion 21156985

Base	System	Value
2	Binary	1010000101101010001111001
3	Ternary	1110210212221001
4	Quaternary	1100231101321
5	Quinary	20404010420
6	Senary	2033245001
8	Octal	120552171
10	Decimal	21156985
12	Duodecimal	7103761
16	Hexadecimal	142d479
20	Vigesimal	6c4c95
36	Base36	clgu1

Cryptographic Hash Functions

md5	8a28a71dccc07d076b842d6398e59639
sha1	ea73e49501c470861105f2534db476077c97e020
sha256	c858173b1677dd8a7bf505711b17a66fe6b2a91855ccf68bbeb2c7697a458ed0
sha512	3c86403e87fd58c3c2202c5bfeb2a9b20dd4765d9b239e7b53d1445a3fcd21c3e7cf5df004c061a296169b6ea5c4005963b5d2a98f7ad4c88347b2d81fb2cead
ripemd-160	73b47419744f2986778276e2ce259d7b3be1ddf9

21156985 as geometric shapes

Circle

Radius = n

Diameter	42313970
Circumference	132933257.29622
Area	1.4062334653086E+15

Sphere

Radius = n

Volume	3.966888044271E+22
Surface area	5.6249338612345E+15
Circumference	132933257.29622

Square

Length = n

Perimeter	84627940
Area	447618014290225
Diagonal	29920495.125924

Cube

Length = n

Surface area	2685708085741350
Volume	9.4702476140681E+21
Space diagonal	36644972.954973

Equilateral Triangle

Length = n

Perimeter	63470955
Area	1.9382428578344E+14
Altitude	18322486.477486

Triangular Pyramid

Length = n

Surface area	1.9382428578344E+14
Volume	1.1160793845705E+21
Height	9973498.375308