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

21006985 (number)

21006985 is an odd 8-digits composite number following 21006984 and preceding 21006986. In scientific notation, it is written as 2.1006985 × 10^7. The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors. There are 15816960 positive integers (up to 21006985) that are relatively prime to 21006985.

Interesting facts

21006985 has 8 divisors, whose sum is 26691336
The reverse of 21006985 is 58960012
Previous prime number is 17

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4

Name

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

Notation

Scientific notation	2.1006985 × 10^7
Engineering notation	2.1006985 × 10^6

Prime Factorization of 21006985

Prime Factorization 5 × 17 × 247141

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21006985	Product of the distinct prime numbers

The prime factorization of 21006985 is 5 × 17 × 247141. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 5, 47, 53, 892, 967, 1279, 9834, 27497, 47343, 161355, 941271, 3495887, 1001835, 30194644, 67202724, 785892611, 892501465, 9252867486, 1927575346

Basic calculations (n = 21006985)

Multiplication

n×y

n×2	42013970
n×3	63020955
n×4	84027940
n×5	105034925

Division

n÷y

n÷2	10503492.5
n÷3	7002328.3333333
n÷3	5251746.25
n÷5	4201397

Exponentiation

n^y

n²	441293418790225
n³	9.270244229125E+21
n⁴	1.9473988146756E+29
n⁵	4.0908977688909E+36

Nth Root

^y√n

²√n	4583.3377575736
³√n	275.92300327164
⁴√n	67.700352713805
⁵√n	29.138872627814

Divisors of 21006985

1, 5, 17, 85, 247141, 1235705, 4201397, 21006985

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	-21006984	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 21006985 can be divided by 8 positive divisors. The sum of these divisors (counting 21006985) is 1, the average is 0.125.

Base conversion 21006985

Base	System	Value
2	Binary	1010000001000101010001001
3	Ternary	1110112021011111
4	Quaternary	1100020222021
5	Quinary	20334210420
6	Senary	2030130321
8	Octal	120105211
10	Decimal	21006985
12	Duodecimal	70509a1
16	Hexadecimal	1408a89
20	Vigesimal	6b5h95
36	Base36	ci93d

Cryptographic Hash Functions

md5	ae9add9591b618c13aef8226052f860a
sha1	9e963baa17e4ffb4791e0d7a085edcd95235e2f5
sha256	e81449a0e2166a89cc9499782e3b0044d58eae30bfca3c95eaacc8ba17495414
sha512	ba1281444d641e824e0786d138034b90568e4b83ae69be6bb9f8bc131f12f4a9368f10285a584992c1858097960f65b54e398b40bf8c05e7c397496845fe4516
ripemd-160	ec41cdadea0d69116092c68d685120c9272ab73a

21006985 as geometric shapes

Circle

Radius = n

Diameter	42013970
Circumference	131990779.50014
Area	1.3863641625489E+15

Sphere

Radius = n

Volume	3.8831108222936E+22
Surface area	5.5454566501956E+15
Circumference	131990779.50014

Square

Length = n

Perimeter	84027940
Area	441293418790225
Diagonal	29708363.091568

Cube

Length = n

Surface area	2647760512741350
Volume	9.270244229125E+21
Space diagonal	36385165.333837

Equilateral Triangle

Length = n

Perimeter	63020955
Area	1.9108565559761E+14
Altitude	18192582.666919

Triangular Pyramid

Length = n

Surface area	1.9108565559761E+14
Volume	1.0925087596116E+21
Height	9902787.6971894