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

21509985 (number)

21509985 is an odd 8-digits composite number following 21509984 and preceding 21509986. In scientific notation, it is written as 2.1509985 × 10^7. The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors. There are 9833088 positive integers (up to 21509985) that are relatively prime to 21509985.

Interesting facts

21509985 has 8 divisors, whose sum is 27041256
The reverse of 21509985 is 58990512
Previous prime number is 5

Basic properties

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

Name

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

Notation

Scientific notation	2.1509985 × 10^7
Engineering notation	2.1509985 × 10^6

Prime Factorization of 21509985

Prime Factorization 21 × 5 × 204857

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21509985	Product of the distinct prime numbers

The prime factorization of 21509985 is 21 × 5 × 204857. Since it has a total of 3 prime factors.

Most popular turbo-numbers

7, 5, 3, 4, 476, 25, 1156, 3694, 10008, 79403, 129917, 671205, 4474324, 7389727, 54828318, 40350859, 579271545, 564220477, 6753897666, 5330776272

Basic calculations (n = 21509985)

Multiplication

n×y

n×2	43019970
n×3	64529955
n×4	86039940
n×5	107549925

Division

n÷y

n÷2	10754992.5
n÷3	7169995
n÷3	5377496.25
n÷5	4301997

Exponentiation

n^y

n²	462679454700225
n³	9.95222813041E+21
n⁴	2.140722778017E+29
n⁵	4.6046914844303E+36

Nth Root

^y√n

²√n	4637.8858330062
³√n	278.10792783311
⁴√n	68.102025175513
⁵√n	29.277097666809

Divisors of 21509985

1, 5, 21, 105, 204857, 1024285, 4301997, 21509985

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	-21509984	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 21509985 can be divided by 8 positive divisors. The sum of these divisors (counting 21509985) is 1, the average is 0.125.

Base conversion 21509985

Base	System	Value
2	Binary	1010010000011011101100001
3	Ternary	1111110211011010
4	Quaternary	1102003131201
5	Quinary	21001304420
6	Senary	2045011133
8	Octal	122033541
10	Decimal	21509985
12	Duodecimal	7253aa9
16	Hexadecimal	1483761
20	Vigesimal	6e8ej5
36	Base36	ct17l

Cryptographic Hash Functions

md5	0d6b6417b9802b48bf5e3386521910ef
sha1	73b66458f59a229d709342368de913530697a8a3
sha256	947992eaa0e79a388ac9f499e40516b1e102af420f1b42b490fff6271ebfda0e
sha512	7180c7b4f6574e4d2538aa9eda02c93825df54f5720d47063e387cea2e8679be781bb9d24847fc5e92595a1dc355ba99b174c82adb4657ca28c6f3e2db1c53b3
ripemd-160	9ee25de3475961233b1f9c5e98ded45879a83832

21509985 as geometric shapes

Circle

Radius = n

Diameter	43019970
Circumference	135151221.70965
Area	1.4535503758532E+15

Sphere

Radius = n

Volume	4.1687795708461E+22
Surface area	5.8142015034126E+15
Circumference	135151221.70965

Square

Length = n

Perimeter	86039940
Area	462679454700225
Diagonal	30419712.513442

Cube

Length = n

Surface area	2776076728201350
Volume	9.95222813041E+21
Space diagonal	37256386.890044

Equilateral Triangle

Length = n

Perimeter	64529955
Area	2.0034608078976E+14
Altitude	18628193.445022

Triangular Pyramid

Length = n

Surface area	2.0034608078976E+14
Volume	1.1728813331547E+21
Height	10139904.171147